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  • related to java file handling.

    - by sadia
    In Java how can I take the data of my file on my display screen? I want to use data in my file and also want that data to be displayed on my output screen when I execute my program. Can any body please help by providing me such example in Java language. Thank you!

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  • Java reference storage question

    - by aab
    In java, when you pass an object to a method as a parameter, it is actually passing a reference, or a pointer, to that object because objects in Java are references. Inside the function, it has a pointer to that object which is a location in memory. I am wondering where this pointer lives in memory? Is a new memory location created once inside the function to hold this reference?

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  • java RSA Multiple Encryption

    - by user1763730
    I encrypt my message with a symmetric key and the symmetric key itself has to be further encrypted with different RSA public keys. When I tried to implement the above I got the following error: javax.crypto.IllegalBlockSizeException: The input was invalid: Invalid input length. at com.rsa.shareCrypto.j.hD.engineDoFinal(Unknown Source) at javax.crypto.Cipher.doFinal(Cipher.java:2087) at wrap1.main(wrap1.java:69) Is there a way to solve this problem ?

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  • extend php with java/c++?

    - by fayer
    i only know php and i wonder if you can extend a php web application with c++ or java when needed? i dont want to convert my code with quercus, cause that is very error prone. is there another way to extend it? cause from what i have read python can extend it with c++ without converting the python code and use java with jython?

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  • Deprecate in Java 1.6

    - by iano
    In Java 1.5, to deprecate a method you would: @Deprecated int foo(int bar) { } Compiling this in Java 1.6 results in the following: Syntax error, annotations are only available if source level is 1.5 Any ideas?

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  • mongodb java driver - raw command?

    - by Scott
    Is it possible to execute raw commands as javascript through the Java driver for MongoDB? I'm tired of wrapping everything in Java objects using Rhino, and would happily sacrifice performance for the convenience of passing javascript directly through to the DB. If not, I can always use sleepymongoose or something, but I don't really want to add yet another language (python) to the stack at this point. Any insights are appreciated.

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  • Java projects without swing

    - by Jeff Home
    I'm quite familiar with Java and I would like to work on a project on my free time but for some reason, I just hate having to work with swing. I'm wondering what kind of Java technologies are available out there that I can use for starting a project. Thank you.

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  • Writing a script in Java?

    - by giri
    I am working with telecom company. I am familiar with Java programming language. But now I have a task to write a script, with Linux operating systems. I have to write a script for fetching data from other computer and check some conditions. How can I do that using Java?

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  • Best Java obfuscator ?

    - by Xinus
    I am developing a security software and want to obfuscate my java code so it will become impossible to reverse engineer. What is the most reliable java obfuscator ?

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  • Should I focus on java or on C#

    - by Daniel
    My friend started his computer engineering studies this semester, and wants to know if he should focus on Java or C#? While I am more on the Java side of life, I don't know what to answer him unbiased, so If you can give some unbiased statements on this, this would be great.

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  • Implementation of ECC in Java

    - by Rookie_22
    While trying to encrypt a given input using Elliptic Curve Cryptography in Java I'm using the following algorithms for generating the cipher and the key: KeyPairGenerator g = KeyPairGenerator.getInstance("ECDSA"); Cipher cipher = Cipher.getInstance("ECIES"); Now as expected, the cipher isn't accepting the keys generated by the ECDSA algorithm. I get the error as - must be passed IE key. I searched for the ciphers being supported by these 2 methods here: http://java.sun.com/javase/6/docs/technotes/guides/security/StandardNames.html#Cipher Unfortunately no else algo is supported for ECC. Has anyone used ECC generated keys to encrypt/decrypt an input? Which algo should I use for both so that they don't clash with each other?

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  • top Tweets SOA Partner Community &ndash; June 2012

    - by JuergenKress
    Send your tweets @soacommunity #soacommunity and follow us at http://twitter.com/soacommunity Simone Geib Contact me directly for ideas how to improve http://bit.ly/advancedsoasuite and additional posts, presentations, white papers, #soasuite SOA CommunitySOA Community Newsletter May 2012 https://soacommunity.wordpress.com /2012/05/28/soa-community-newsletter-may-2012/ #soacommunity Simone Geib #soasuite advanced OTN page has become too cluttered. Broke it into separate pages to start with. http://bit.ly/advancedsoasuite SOA CommunitySOA Management with Enterprise Manager Cloud Control 12c and Business Transaction Management 12c Demo https://soacommunity.wordpress.com /2012/05/21/soa-management-with-enterprise-manager-cloud-control-12c-and-business-transaction-management-12c-demo/ #soacommunity OracleBlogs June Webcast: SOA Gateway Implementation and Troubleshooting (2 sessions) http://ow.ly/1kbRFA OTNArchBeatEvery cloud needs an SOA lining: analyst | @JoeMcKendrick http://zd.net/KTgMHk ServiceTechSymposium New session just posted to calendar: "NoSQL for Data Services, Data Virtualization & Big Data" by Guido Schmutz, Trivadis AG ://ow.ly/bjjOe OTNArchBeat?Every cloud needs an SOA lining: analyst | @JoeMcKendrick http://zd.net/KTgMHk Debra Lilley looks good - real proof people are using the apps ! RT @fteter:Very cool Fusion Applications Help site: http://bit.ly/L3nvOR #FusionApps OTNArchBeat How to Set JVM Parameters in Oracle SOA 11G | Francis Ip http://bit.ly/JBDYPj demed"rapid proliferation of cloud computing will drive convergence of SOA and cloud paradigms" http://ovum.com/2012/05/18/soa-paves-the-way-for-cloud/ SOA Community Sending out invitations to our advanced Fusion Middleware Summer Camps! Want to learn more register for the community http://www.oracle.com/goto/emea/soa SOA Community Middleware Oracle Excellence Awards 2012 - HAPPY NEW YEAR! https://soacommunity.wordpress.com/ 2012/05/31/middleware-oracle-excellence-awards-2012 happy-new-year/ #soacommunity #opn #opnaward #specialization #oracle Simone Geib #oraclesoa performance tuning resources. All in one: docs, blogs, WPs, ppts: http://bit.ly/soa_resources OracleBlogs Middleware Oracle Excellence Awards 2012 - HAPPY NEW YEAR! http://ow.ly/1k9ri0 ServiceTechSymposiumNew session just posted to Symposium calendar: "Service Modeling & BPM Business Value Patterns" by Jürgen Kress, Oracle http://www.servicetechsymposium.com/ agenda2012.php #service_modeling_and_bpm _business_value_patterns SOA Community Happy New Year #soacommunity thanks for the business! Time for a drink ;-) http://pic.twitter.com/zkK08KWB Jan van ZoggelUsing execute-sql() function for Name-Value pair lookups in Oracle Service Bus http://wp.me/p1H430-jZ SOA Community Middleware Oracle Excellence Awards 2012&ndash;HAPPY NEW YEAR! http://wp.me/p10C8u-q4 orclateamsoa A-Team Blog #ateam: BPM 11g Deployment & Instance Migration - I have seen a number of request lately asking how to http://ow.ly/1jZ0h8 OTNArchBeat Who should ‘own’ the Enterprise Architecture? | Michael Glas http://bit.ly/K0ge0Q Oracle UPK & Tutor TOMORROW! (June 23rd) - UPK Professional Webinar at Noon ET: Discover why user adoption is a key factor for the http://bit.ly/LjZjdx Sabine Leitner Finance Event im Design-Hotel beim Barbeque: 21. Juni FRA mit Kunden SV Informatik, Schufa, LBBW http://bit.ly/JtwE3v #Oracle @itevent OracleEnterpriseMgr SOA Management with Enterprise Manager Cloud Control 12c and Business Transaction Management 12c Demo http://ow.ly/b3WP1 #em12c ServiceTechSymposium New session just posted to Symposium calendar: "Elastic SOA in the Cloud" by Steve Millidge, C2B2 Consulting http://www.servicetechsymposium.com /agenda2012.php #elastic_soa_in_the_cloud OTNArchBeat Securing Heterogeneous Systems Using Oracle Web Services Manager by @rluttikhuizen & Jens Peters http://bit.ly/KjShFi Oracleteamsoa A-Team Blog #ateam: How to Set JVM Parameters in Oracle SOA 11G http://ow.ly/1k2cnl SOA Community Oracle Service Registry in an automated (Maven) SOA/BPM build http://redstack.wordpress.com /2012/05/22/using-oracle-service-registry-in-an-automated-maven-soabpm-build/ #soacommunity #redstack #soa #osr #opn SOA CommunityHigh demand for advanced Fusion Middleware Summer Camps! Want to learn more register for the #soacommunity http://www.oracle.com/goto/emea/soa OracleBlogs? How to Set JVM Parameters in Oracle SOA 11G http://ow.ly/1k1UTv SOA Community top Tweets SOA Partner Community &ndash; May 2012 http://wp.me/p10C8u-pP ServiceTechSymposium New session just posted to Symposium calendar: "SOA Governance at EDP: A Global Energy Company" by Manuel Rosa, Link http://www.servicetechsymposium.com/ agenda2012.php #soa_governance_at_edp For regular information on Oracle SOA Suite become a member in the SOA Partner Community for registration please visit  www.oracle.com/goto/emea/soa (OPN account required) Blog Twitter LinkedIn Mix Forum Technorati Tags: soacommunity,twitter,Oracle,SOA Community,Jürgen Kress,OPN,SOA,BPM

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  • Know more about shared pool subpool

    - by Liu Maclean(???)
    ????T.askmaclean.com???Shared Pool?SubPool?????,????????_kghdsidx_count ? subpool ??subpool????( ???duration)???: SQL> select * from v$version; BANNER ---------------------------------------------------------------- Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bi PL/SQL Release 10.2.0.5.0 - Production CORE    10.2.0.5.0      Production TNS for Linux: Version 10.2.0.5.0 - Production NLSRTL Version 10.2.0.5.0 - Production SQL> set linesize 200 pagesize 1400 SQL> show parameter kgh NAME                                 TYPE                             VALUE ------------------------------------ -------------------------------- ------------------------------ _kghdsidx_count                      integer                          7 SQL> oradebug setmypid; Statement processed. SQL> oradebug dump heapdump 536870914; Statement processed. SQL> oradebug tracefile_name /s01/admin/G10R25/udump/g10r25_ora_11783.trc [oracle@vrh8 dbs]$ grep "sga heap"  /s01/admin/G10R25/udump/g10r25_ora_11783.trc HEAP DUMP heap name="sga heap"  desc=0x60000058 HEAP DUMP heap name="sga heap(1,0)"  desc=0x60036110 FIVE LARGEST SUB HEAPS for heap name="sga heap(1,0)"   desc=0x60036110 HEAP DUMP heap name="sga heap(2,0)"  desc=0x6003f938 FIVE LARGEST SUB HEAPS for heap name="sga heap(2,0)"   desc=0x6003f938 HEAP DUMP heap name="sga heap(3,0)"  desc=0x60049160 FIVE LARGEST SUB HEAPS for heap name="sga heap(3,0)"   desc=0x60049160 HEAP DUMP heap name="sga heap(4,0)"  desc=0x60052988 FIVE LARGEST SUB HEAPS for heap name="sga heap(4,0)"   desc=0x60052988 HEAP DUMP heap name="sga heap(5,0)"  desc=0x6005c1b0 FIVE LARGEST SUB HEAPS for heap name="sga heap(5,0)"   desc=0x6005c1b0 HEAP DUMP heap name="sga heap(6,0)"  desc=0x600659d8 FIVE LARGEST SUB HEAPS for heap name="sga heap(6,0)"   desc=0x600659d8 HEAP DUMP heap name="sga heap(7,0)"  desc=0x6006f200 FIVE LARGEST SUB HEAPS for heap name="sga heap(7,0)"   desc=0x6006f200 SQL> alter system set "_kghdsidx_count"=6 scope=spfile; System altered. SQL> startup force; ORACLE instance started. Total System Global Area  859832320 bytes Fixed Size                  2100104 bytes Variable Size             746587256 bytes Database Buffers          104857600 bytes Redo Buffers                6287360 bytes Database mounted. Database opened. SQL> SQL> oradebug setmypid; Statement processed. SQL> oradebug dump heapdump 536870914; Statement processed. SQL> oradebug tracefile_name /s01/admin/G10R25/udump/g10r25_ora_11908.trc [oracle@vrh8 dbs]$ grep "sga heap"  /s01/admin/G10R25/udump/g10r25_ora_11908.trc HEAP DUMP heap name="sga heap"  desc=0x60000058 HEAP DUMP heap name="sga heap(1,0)"  desc=0x600360f0 FIVE LARGEST SUB HEAPS for heap name="sga heap(1,0)"   desc=0x600360f0 HEAP DUMP heap name="sga heap(2,0)"  desc=0x6003f918 FIVE LARGEST SUB HEAPS for heap name="sga heap(2,0)"   desc=0x6003f918 HEAP DUMP heap name="sga heap(3,0)"  desc=0x60049140 FIVE LARGEST SUB HEAPS for heap name="sga heap(3,0)"   desc=0x60049140 HEAP DUMP heap name="sga heap(4,0)"  desc=0x60052968 FIVE LARGEST SUB HEAPS for heap name="sga heap(4,0)"   desc=0x60052968 HEAP DUMP heap name="sga heap(5,0)"  desc=0x6005c190 FIVE LARGEST SUB HEAPS for heap name="sga heap(5,0)"   desc=0x6005c190 HEAP DUMP heap name="sga heap(6,0)"  desc=0x600659b8 FIVE LARGEST SUB HEAPS for heap name="sga heap(6,0)"   desc=0x600659b8 SQL> SQL> alter system set "_kghdsidx_count"=2 scope=spfile; System altered. SQL> SQL> startup force; ORACLE instance started. Total System Global Area  851443712 bytes Fixed Size                  2100040 bytes Variable Size             738198712 bytes Database Buffers          104857600 bytes Redo Buffers                6287360 bytes Database mounted. Database opened. SQL> oradebug setmypid; Statement processed. SQL> oradebug dump heapdump 2; Statement processed. SQL> oradebug tracefile_name /s01/admin/G10R25/udump/g10r25_ora_12003.trc [oracle@vrh8 ~]$ grep "sga heap"  /s01/admin/G10R25/udump/g10r25_ora_12003.trc HEAP DUMP heap name="sga heap"  desc=0x60000058 HEAP DUMP heap name="sga heap(1,0)"  desc=0x600360b0 HEAP DUMP heap name="sga heap(2,0)"  desc=0x6003f8d SQL> alter system set cpu_count=16 scope=spfile; System altered. SQL> startup force; ORACLE instance started. Total System Global Area  851443712 bytes Fixed Size                  2100040 bytes Variable Size             738198712 bytes Database Buffers          104857600 bytes Redo Buffers                6287360 bytes Database mounted. Database opened. SQL> oradebug setmypid; Statement processed. SQL>  oradebug dump heapdump 2; Statement processed. SQL> oradebug tracefile_name /s01/admin/G10R25/udump/g10r25_ora_12065.trc [oracle@vrh8 ~]$ grep "sga heap"  /s01/admin/G10R25/udump/g10r25_ora_12065.trc HEAP DUMP heap name="sga heap"  desc=0x60000058 HEAP DUMP heap name="sga heap(1,0)"  desc=0x600360b0 HEAP DUMP heap name="sga heap(2,0)"  desc=0x6003f8d8 SQL> show parameter sga_target NAME                                 TYPE                             VALUE ------------------------------------ -------------------------------- ------------------------------ sga_target                           big integer                      0 SQL> alter system set sga_target=1000M scope=spfile; System altered. SQL> startup force; ORACLE instance started. Total System Global Area 1048576000 bytes Fixed Size                  2101544 bytes Variable Size             738201304 bytes Database Buffers          301989888 bytes Redo Buffers                6283264 bytes Database mounted. Database opened. SQL> alter system set sga_target=1000M scope=spfile; System altered. SQL> startup force; ORACLE instance started. Total System Global Area 1048576000 bytes Fixed Size                  2101544 bytes Variable Size             738201304 bytes Database Buffers          301989888 bytes Redo Buffers                6283264 bytes Database mounted. Database opened. SQL> SQL> SQL> oradebug setmypid; Statement processed. SQL> oradebug dump heapdump 2; Statement processed. SQL>  oradebug tracefile_name /s01/admin/G10R25/udump/g10r25_ora_12148.trc SQL> SQL> Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options [oracle@vrh8 dbs]$ grep "sga heap"  /s01/admin/G10R25/udump/g10r25_ora_12148.trc HEAP DUMP heap name="sga heap"  desc=0x60000058 HEAP DUMP heap name="sga heap(1,0)"  desc=0x60036690 HEAP DUMP heap name="sga heap(1,1)"  desc=0x60037ee8 HEAP DUMP heap name="sga heap(1,2)"  desc=0x60039740 HEAP DUMP heap name="sga heap(1,3)"  desc=0x6003af98 HEAP DUMP heap name="sga heap(2,0)"  desc=0x6003feb8 HEAP DUMP heap name="sga heap(2,1)"  desc=0x60041710 HEAP DUMP heap name="sga heap(2,2)"  desc=0x60042f68 _enable_shared_pool_durations:?????????10g????shared pool duration??,?????sga_target?0?????false; ???10.2.0.5??cursor_space_for_time???true??????false,???10.2.0.5??cursor_space_for_time????? SQL> alter system set "_enable_shared_pool_durations"=false scope=spfile; System altered. SQL> SQL> startup force; ORACLE instance started. Total System Global Area 1048576000 bytes Fixed Size                  2101544 bytes Variable Size             738201304 bytes Database Buffers          301989888 bytes Redo Buffers                6283264 bytes Database mounted. Database opened. SQL> oradebug setmypid; Statement processed. SQL> oradebug dump heapdump 2; Statement processed. SQL> oradebug tracefile_name /s01/admin/G10R25/udump/g10r25_ora_12233.trc SQL> SQL> Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options\ [oracle@vrh8 dbs]$ grep "sga heap"   /s01/admin/G10R25/udump/g10r25_ora_12233.trc HEAP DUMP heap name="sga heap"  desc=0x60000058 HEAP DUMP heap name="sga heap(1,0)"  desc=0x60036690 HEAP DUMP heap name="sga heap(2,0)"  desc=0x6003feb8 ??:1._kghdsidx_count ??? shared pool subpool???, _kghdsidx_count???????7 ??? 7? shared pool subpool 2.??????? subpool???4? sub partition ?: sga heap(1,0) sga heap(1,1) sga heap(1,2) sga heap(1,3) ????? cpu??? ?????_kghdsidx_count, ???? ?10g ?AUTO SGA ??? shared pool duration???, duration ??4?: Session duration Instance duration (never freed) Execution duration (freed fastest) Free memory ??? shared pool duration???? ?10gR1?Shared Pool?shrink??????????,?????????????Buffer Cache???????????granule,????Buffer Cache?granule????granule header?Metadata(???buffer header??RAC??Lock Elements)????,?????????????????????shared pool????????duration(?????)?chunk??????granule?,????????????granule??10gR2????Buffer Cache Granule????????granule header?buffer?Metadata(buffer header?LE)????,??shared pool???duration?chunk????????granule,??????buffer cache?shared pool??????????????10gr2?streams pool?????????(???????streams pool duration????) reference : http://www.oracledatabase12g.com/archives/understanding-automatic-sga-memory-management.html

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  • Given an XML which contains a representation of a graph, how to apply it DFS algorithm? [on hold]

    - by winston smith
    Given the followin XML which is a directed graph: <?xml version="1.0" encoding="iso-8859-1" ?> <!DOCTYPE graph PUBLIC "-//FC//DTD red//EN" "../dtd/graph.dtd"> <graph direct="1"> <vertex label="V0"/> <vertex label="V1"/> <vertex label="V2"/> <vertex label="V3"/> <vertex label="V4"/> <vertex label="V5"/> <edge source="V0" target="V1" weight="1"/> <edge source="V0" target="V4" weight="1"/> <edge source="V5" target="V2" weight="1"/> <edge source="V5" target="V4" weight="1"/> <edge source="V1" target="V2" weight="1"/> <edge source="V1" target="V3" weight="1"/> <edge source="V1" target="V4" weight="1"/> <edge source="V2" target="V3" weight="1"/> </graph> With this classes i parsed the graph and give it an adjacency list representation: import java.io.IOException; import java.util.HashSet; import java.util.LinkedList; import java.util.Collection; import java.util.Iterator; import java.util.logging.Level; import java.util.logging.Logger; import practica3.util.Disc; public class ParsingXML { public static void main(String[] args) { try { // TODO code application logic here Collection<Vertex> sources = new HashSet<Vertex>(); LinkedList<String> lines = Disc.readFile("xml/directed.xml"); for (String lin : lines) { int i = Disc.find(lin, "source=\""); String data = ""; if (i > 0 && i < lin.length()) { while (lin.charAt(i + 1) != '"') { data += lin.charAt(i + 1); i++; } Vertex v = new Vertex(); v.setName(data); v.setAdy(new HashSet<Vertex>()); sources.add(v); } } Iterator it = sources.iterator(); while (it.hasNext()) { Vertex ver = (Vertex) it.next(); Collection<Vertex> adyacencias = ver.getAdy(); LinkedList<String> ls = Disc.readFile("xml/graphs.xml"); for (String lin : ls) { int i = Disc.find(lin, "target=\""); String data = ""; if (lin.contains("source=\""+ver.getName())) { Vertex v = new Vertex(); if (i > 0 && i < lin.length()) { while (lin.charAt(i + 1) != '"') { data += lin.charAt(i + 1); i++; } v.setName(data); } i = Disc.find(lin, "weight=\""); data = ""; if (i > 0 && i < lin.length()) { while (lin.charAt(i + 1) != '"') { data += lin.charAt(i + 1); i++; } v.setWeight(Integer.parseInt(data)); } if (v.getName() != null) { adyacencias.add(v); } } } } for (Vertex vert : sources) { System.out.println(vert); System.out.println("adyacencias: " + vert.getAdy()); } } catch (IOException ex) { Logger.getLogger(ParsingXML.class.getName()).log(Level.SEVERE, null, ex); } } } This is another class: import java.util.Collection; import java.util.Objects; public class Vertex { private String name; private int weight; private Collection ady; public Collection getAdy() { return ady; } public void setAdy(Collection adyacencias) { this.ady = adyacencias; } public String getName() { return name; } public void setName(String nombre) { this.name = nombre; } public int getWeight() { return weight; } public void setWeight(int weight) { this.weight = weight; } @Override public int hashCode() { int hash = 7; hash = 43 * hash + Objects.hashCode(this.name); hash = 43 * hash + this.weight; return hash; } @Override public boolean equals(Object obj) { if (obj == null) { return false; } if (getClass() != obj.getClass()) { return false; } final Vertex other = (Vertex) obj; if (!Objects.equals(this.name, other.name)) { return false; } if (this.weight != other.weight) { return false; } return true; } @Override public String toString() { return "Vertice{" + "name=" + name + ", weight=" + weight + '}'; } } And finally: /** * * @author user */ /* -*-jde-*- */ /* <Disc.java> Contains the main argument*/ import java.io.*; import java.util.LinkedList; /** * Lectura y escritura de archivos en listas de cadenas * Ideal para el uso de las clases para gráficas. * * @author Peralta Santa Anna Victor Miguel * @since Julio 2011 */ public class Disc { /** * Metodo para lectura de un archivo * * @param fileName archivo que se va a leer * @return El archivo en representacion de lista de cadenas */ public static LinkedList<String> readFile(String fileName) throws IOException { BufferedReader file = new BufferedReader(new FileReader(fileName)); LinkedList<String> textlist = new LinkedList<String>(); while (file.ready()) { textlist.add(file.readLine().trim()); } file.close(); /* for(String linea:textlist){ if(linea.contains("source")){ //String generado = linea.replaceAll("<\\w+\\s+\"", ""); //System.out.println(generado); } }*/ return textlist; }//readFile public static int find(String linea,String palabra){ int i,j; boolean found = false; for(i=0,j=0;i<linea.length();i++){ if(linea.charAt(i)==palabra.charAt(j)){ j++; if(j==palabra.length()){ found = true; return i; } }else{ continue; } } if(!found){ i= -1; } return i; } /** * Metodo para la escritura de un archivo * * @param fileName archivo que se va a escribir * @param tofile la lista de cadenas que quedaran en el archivo * @param append el bit que dira si se anexa el contenido o se empieza de cero */ public static void writeFile(String fileName, LinkedList<String> tofile, boolean append) throws IOException { FileWriter file = new FileWriter(fileName, append); for (int i = 0; i < tofile.size(); i++) { file.write(tofile.get(i) + "\n"); } file.close(); }//writeFile /** * Metodo para escritura de un archivo * @param msg archivo que se va a escribir * @param tofile la cadena que quedaran en el archivo * @param append el bit que dira si se anexa el contenido o se empieza de cero */ public static void writeFile(String msg, String tofile, boolean append) throws IOException { FileWriter file = new FileWriter(msg, append); file.write(tofile); file.close(); }//writeFile }// I'm stuck on what can be the best way to given an adjacency list representation of the graph how to apply it Depth-first search algorithm. Any idea of how to aproach to complete the task?

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  • Blog Buzz - Devoxx 2011

    - by Janice J. Heiss
    Some day I will make it to Devoxx – for now, I’m content to vicariously follow the blogs of attendees and pick up on what’s happening.  I’ve been doing more blog "fishing," looking for the best commentary on 2011 Devoxx. There’s plenty of food for thought – and the ideas are not half-baked.The bloggers are out in full, offering useful summaries and commentary on Devoxx goings-on.Constantin Partac, a Java developer and a member of Transylvania JUG, a community from Cluj-Napoca/Romania, offers an excellent summary of the Devoxx keynotes. Here’s a sample:“Oracle Opening Keynote and JDK 7, 8, and 9 Presentation•    Oracle is committed to Java and wants to provide support for it on any device.•    JSE 7 for Mac will be released next week.•    Oracle would like Java developers to be involved in JCP, to adopt a JSR and to attend local JUG meetings.•    JEE 7 will be released next year.•    JEE 7 is focused on cloud integration, some of the features are already implemented in glassfish 4 development branch.•    JSE 8 will be release in summer of 2013 due to “enterprise community request” as they can not keep the pace with an 18    month release cycle.•    The main features included in JSE8 are lambda support, project Jigsaw, new Date/Time API, project Coin++ and adding   support for sensors. JSE 9 probably will focus on some of these features:1.    self tuning JVM2.    improved native language integration3.    processing enhancement for big data4.    reification (adding runtime class type info for generic types)5.    unification of primitive and corresponding object classes6.    meta-object protocol in order to use type and methods define in other JVM languages7.    multi-tenancy8.    JVM resource management” Thanks Constantin! Ivan St. Ivanov, of SAP Labs Bulgaria, also commented on the keynotes with a different focus.  He summarizes Henrik Stahl’s look ahead to Java SE 8 and JavaFX 3.0; Cameron Purdy on Java EE and the cloud; celebrated Java Champion Josh Bloch on what’s good and bad about Java; Mark Reinhold’s quick look ahead to Java SE 9; and Brian Goetz on lambdas and default methods in Java SE 8. Here’s St. Ivanov’s account of Josh Bloch’s comments on the pluses of Java:“He started with the virtues of the platform. To name a few:    Tightly specified language primitives and evaluation order – int is always 32 bits and operations are executed always from left  to right, without compilers messing around    Dynamic linking – when you change a class, you need to recompile and rebuild just the jar that has it and not the whole application    Syntax  similarity with C/C++ – most existing developers at that time felt like at home    Object orientations – it was cool at that time as well as functional programming is today    It was statically typed language – helps in faster runtime, better IDE support, etc.    No operator overloading – well, I’m not sure why it is good. Scala has it for example and that’s why it is far better for defining DSLs. But I will not argue with Josh.”It’s worth checking out St. Ivanov’s summary of Bloch’s views on what’s not so great about Java as well. What's Coming in JAX-RS 2.0Marek Potociar, Principal Software Engineer at Oracle and currently specification lead of Java EE RESTful web services API (JAX-RS), blogged on his talk about what's coming in JAX-RS 2.0, scheduled for final release in mid-2012.  Here’s a taste:“Perhaps the most wanted addition to the JAX-RS is the Client API, that would complete the JAX-RS story, that is currently server-side only. In JAX-RS 2.0 we are adding a completely interface-based and fluent client API that blends nicely in with the existing fluent response builder pattern on the server-side. When we started with the client API, the first proposal contained around 30 classes. Thanks to the feedback from our Expert Group we managed to reduce the number of API classes to 14 (2 of them being exceptions)! The resulting is compact while at the same time we still managed to create an API that reflects the method invocation context flow (e.g. once you decide on the target URI and start setting headers on the request, your IDE will not try to offer you a URI setter in the code completion). This is a subtle but very important usability aspect of an API…” Obviously, Devoxx is a great Java conference, one that is hitting this year at a time when much is brewing in the platform and beginning to be anticipated.

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  • EPM 11.1.2.2.000 - released

    - by THE
    Normal 0 21 false false false DE X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} Oracle’s EPM System Development Team is pleased to announce General Availability of Oracle Hyperion Enterprise Performance Management System release 11.1.2.2.  This release is available on the Oracle Software Delivery Cloud (  https://edelivery.oracle.com).  This is a localized release available in multiple languages. See "System Requirements and Supported Platforms for Oracle Enterprise Performance Management System 11.1.2.2" ( http://www.oracle.com/technetwork/middleware/ias/downloads/fusion-certification-100350.html)  for details.  In this release, EPM System products extend the new features and products offered with release 11.1.2.1. Please visit the product "New Features Guides" ( http://docs.oracle.com/cd/E17236_01/index.htm), available in the Enterprise Performance Management System Documentation Library for more information. Note: Oracle Hyperion Calculation Manager has replaced Oracle Hyperion Business Rules as the mechanism for designing and managing business rules, therefore, Business Rules is no longer released with EPM System Release 11.1.2.2. If you are applying 11.1.2.2 as a maintenance release, or upgrading to Release 11.1.2.2, and have been using Business Rules in an earlier release, you must migrate to Calculation Manager rules in Release 11.1.2.2. See Oracle Enterprise Performance Management System Installation and Configuration Guide. The EPM System Media pack on Oracle Software Delivery Cloud has been simplified.  Software downloads have been merged together. See the Media Pack Readme for a list of downloads needed for your domain/product. IBM WebSphere 7.0.0.19+ (AS, ND) is now supported as an application server.  Documentation about deploying to WebSphere is in the chapter titled “Deploying EPM System Products to WebSphere Application Server” in the Oracle Enterprise Performance Management System Installation and Configuration Guide. FireFox 10.x+ and Internet Explorer 9 are now supported Web browsers. Microsoft Office 2010 64 bit is now supported. Microsoft Windows Installer (MSI) Client Installers are now provided for Oracle Essbase Client, Oracle Essbase Administration Services Console, Oracle Essbase Studio Console, and Oracle Hyperion Financial Management Client. Online Help content for EPM System products is served from a central Oracle download location, which reduces the download and installation time for EPM System. You can also install and configure online Help to run locally. For more information, see the Oracle Enterprise Performance Management System Installation and Configuration Guide.  For more information on , please see the “Oracle Enterprise Performance Management System, Release 11.1.2.2.000 Readme ( http://docs.oracle.com/cd/E17236_01/epm.1112/epm_1112200_readme.pdf).

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  • javax.naming.NameNotFoundException: Name [comp/env] is not bound in this Context. Unable to find [comp] error with java scheduler

    - by Morgan Azhari
    What I'm trying to do is to update my database after a period of time. So I'm using java scheduler and connection pooling. I don't know why but my code only working once. It will print: init success success javax.naming.NameNotFoundException: Name [comp/env] is not bound in this Context. Unable to find [comp]. at org.apache.naming.NamingContext.lookup(NamingContext.java:820) at org.apache.naming.NamingContext.lookup(NamingContext.java:168) at org.apache.naming.SelectorContext.lookup(SelectorContext.java:158) at javax.naming.InitialContext.lookup(InitialContext.java:411) at test.Pool.main(Pool.java:25) ---> line 25 is Context envContext = (Context)initialContext.lookup("java:/comp/env"); I don't know why it only works once. I already test it if I didn't running it without java scheduler and it works fine. No error whatsoerver. Don't know why i get this error if I running it using scheduler. Hope someone can help me. My connection pooling code: public class Pool { public DataSource main() { try { InitialContext initialContext = new InitialContext(); Context envContext = (Context)initialContext.lookup("java:/comp/env"); DataSource datasource = new DataSource(); datasource = (DataSource)envContext.lookup("jdbc/test"); return datasource; } catch (Exception ex) { ex.printStackTrace(); } return null; } } my web.xml: <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <listener> <listener-class> package.test.Pool</listener-class> </listener> <resource-ref> <description>DB Connection Pooling</description> <res-ref-name>jdbc/test</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref> Context.xml: <?xml version="1.0" encoding="UTF-8"?> <Context path="/project" reloadable="true"> <Resource auth="Container" defaultReadOnly="false" driverClassName="com.mysql.jdbc.Driver" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" initialSize="0" jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer" jmxEnabled="true" logAbandoned="true" maxActive="300" maxIdle="50" maxWait="10000" minEvictableIdleTimeMillis="300000" minIdle="30" name="jdbc/test" password="test" removeAbandoned="true" removeAbandonedTimeout="60" testOnBorrow="true" testOnReturn="false" testWhileIdle="true" timeBetweenEvictionRunsMillis="30000" type="javax.sql.DataSource" url="jdbc:mysql://localhost:3306/database?noAccessToProcedureBodies=true" username="root" validationInterval="30000" validationQuery="SELECT 1"/> </Context> my java scheduler public class Scheduler extends HttpServlet{ public void init() throws ServletException { System.out.println("init success"); try{ Scheduling_test test = new Scheduling_test(); ScheduledExecutorService executor = Executors.newScheduledThreadPool(100); ScheduledFuture future = executor.scheduleWithFixedDelay(test, 1, 60 ,TimeUnit.SECONDS); }catch(Exception e){ e.printStackTrace(); } } } Schedule_test public class Scheduling_test extends Thread implements Runnable{ public void run(){ Updating updating = new Updating(); updating.run(); } } updating public class Updating{ public void run(){ ResultSet rs = null; PreparedStatement p = null; StringBuilder sb = new StringBuilder(); Pool pool = new Pool(); Connection con = null; DataSource datasource = null; try{ datasource = pool.main(); con=datasource.getConnection(); sb.append("SELECT * FROM database"); p = con.prepareStatement(sb.toString()); rs = p.executeQuery(); rs.close(); con.close(); p.close(); datasource.close(); System.out.println("success"); }catch (Exception e){ e.printStackTrace(); } }

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  • How to use this Color's constructor? Java

    - by MaxMackie
    According to Oracle's site, the class Color has a constructor that accepts a single int value which represents an RGB value. http://download.oracle.com/javase/1.4.2/docs/api/java/awt/Color.html#Color(int) An RGB color is actually three different numbers ranging from 0-255. So combining them together to make one int would look like this: White 255,255,255 White 255255255 Right? So I pass this to the constructor and get a vibrant teal color. What am I doing wrong? What haven't I understood?

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  • Calling an Oracle PL/SQL procedure with Custom Object return types from 0jdbc6 JDBCthin drivers

    - by Andrew Harmel-Law
    I'm writing some JDBC code which calls a Oracle 11g PL/SQL procdedure which has a Custom Object return type. Whenever I try an register my return types, I get either ORA-03115 or PLS-00306 as an error when the statement is executed depending on the type I set. An example is below: PLSQL Code: Procedure GetDataSummary (p_my_key IN KEYS.MY_KEY%TYPE, p_recordset OUT data_summary_tab, p_status OUT VARCHAR2); Java Code: String query = "beginmanageroleviewdata.getdatasummary(?, ?, ?); end;"); CallableStatement stmt = conn.prepareCall(query); stmt.setInt(1, 83); stmt.registerOutParameter(2, OracleTypes.CURSOR); // Causes error: PLS-00306 stmt.registerOutParameter(3, OracleTypes.VARCHAR); stmt.execute(stmt); // Error mentioned above thrown here. Can anyone provide me with an example showing how I can do this? I guess it's possible. However I can't see a rowset OracleType. CURSOR, REF, DATALINK, and more fail. Apologies if this is a dumb question. I'm not a PL/SQL expert and may have used the wrong terminology in some areas of my question. (If so, please edit me). Thanks in advance. Regs, Andrew

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  • Incorporating Sound in UPK 3.6.1

    - by [email protected]
    UPK 3.6.1 now offers developers the ability to easily record and edit sound from right within the UPK Developer. Sound can be recorded in either the concept pane or individual topic frames. A developer can record sound at the same time they're capturing a transaction or by adding sound after recording, on a frame-by-frame basis. The sound editor in UPK 3.6.1 allows developers to perform a variety of editing functions: play, insert sound or silence, delete, adjust amplification, and import or export sound files, just to name a few. Internally, Oracle Product Management is using this functionality to create "UPK-casts" for enablement purposes. We do this by capturing PowerPoint slides, then adding sound, allowing us to create our own recorded "webcasts". Because we develop these independently, we control the content and have more flexibility to edit the content as needed. Whether it's a change to a single frame or an entire topic, we can react quickly, providing our users with the most up-to-date information. And you don't need expensive equipment or a sound studio to achieve good sound quality. Depending on how your end users are accessing your content, a $35 head set can do the trick. Just be sure to follow the best practices for sound recording as outlined in the UPK documentation. Tip: we've found that we get the best results with sound consistency when we record all the sound for a topic at one sitting. UPK 3.6.1 is now available for download from Oracle E-Delivery. Upgrade today and have fun creating more robust, engaging content for your users! - Karen Rihs, Oracle UPK & Tutor Outbound Product Management

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  • NRF Online Merchandising Workshop: Where Online Retailers Are Focusing for Holiday and Beyond

    - by Rose Spicer-Oracle
    0 0 1 1204 6863 Oracle Corporation 57 16 8051 14.0 Normal 0 false false false EN-US JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:Cambria; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin;} Last month we attended the NRF Online Merchandising Workshop in LA, and it was a great opportunity to catch up with our customers, meet new retailers, and hear some great presentations from VF Corporation, Zazzle, Julep Beauty, Backcountry, eBags and more. The one-on-one conversations with Merchants and the keynote presentations carry the same themes across companies of all sizes and across verticals. With only 125 days left (and counting) until Black Friday, these conversations provided some great insight in to what’s top of mind for retailers during the most stressful time of their year, and a sneak peek in to what they will deliver this holiday season.  Some of the most popular topics were: When to start promoting for holiday: seems like a funny conversation to have in July, but a number of retailers said they already had their holiday shopping gift guides live on their site, and it was attracting a significant portion of their onsite traffic. When it comes to timing, most retailers were questioning when to begin their holiday promotions -- carefully balancing when to release pricing and specials, and knowing that customers are holding out for last-minute deals and price drops. Many retailers noted the frustrations around transparent pricing by Amazon and a few other mega-retailers last year, publishing their “lowest prices of the season” as early as October – ensuring shoppers that those prices were the best they could get all season long. Many retailers felt their hands were forced to drop prices. Others kept their set pricing with negative customer reaction, causing some to miss their holiday goals. The pressure is on, and most retailers identified November 1 as their target start date for the holiday promotions blitz. Some are even waiting for the big guys to release their “lowest prices of the season” guides and will then follow suit.      Attribution is tough – and a huge focus: understanding the path to conversion is a tough nut to crack, especially in the new omnichannel world where consumers use multiple touchpoints to make a single purchase, and internal management wants to know hard data. This has lead many retailers to invest in attribution; carefully tracking their online marketing efforts to determine what gets “credit” for the sale, instead of giving credit to the “last click.” Retailers noted that it is very difficult to determine the numbers when online and offline worlds collide – like when a shopper uses digital channels for research and then makes a purchase in a store. As one of the presenters from The North Face mentioned in her keynote, a key to enabling better customer service and satisfaction when it comes to converged online and offline sales is training the in-store staff, and creating a culture where it eventually “doesn’t matter what group gets the credit” if they all add to the sale. No doubt, the area of attribution will be a big area of retail investment in the coming years.      How to plan for the converged world: planning to ensure inventory gets where it needs to be was another concern. In conversations with retailers, we advised them to analyze customer patterns: where shoppers purchase items, where the items were sourced from and even where items are returned. This analysis is very valuable in determining inventory plans. From there, retailers can more accurately plan and allocate inventory to support both the online and offline customer behavior. As we head into the holiday season, the need for accurate enterprise-wide inventory visibility, and providing that information to associates, is even more critical to the brand-wide customer experience.       Improving the search / navigation / usability of the site(s): Aside from some of the big ideas and standard holiday pricing pressure, most conversations we had centered around continuing to improve the basics of the site. Reinvesting in search and navigation came up time and time again (FitForCommerce blogged about what a big topic it was at the event as well). Obviously getting shoppers on their path quickly and allowing them to find what they need fast is critical, but it was definitely interesting to hear just how much effort is still going in to honing the search and navigation experience. Adding new elements to search and navigation like typeahed, inventive navigation refinements, and new navigation categories like gift guides, specialized boutiques and flash sales were top of mind, in addition to searchandising and making search-driven product recommendations. (Oracle can help!)       Reducing cart abandonment: always a hot topic that is top of mind for every online retailer. Getting shoppers to the cart is often less then half the battle; getting them to click “buy” and complete the transaction is much more difficult. While retailers carefully study the checkout process and where shoppers tend to bounce, they know that how they design their checkout page is critical. We’re all online shoppers in our personal lives and we know how frustrating it can be when total prices are not transparent (i.e. shipping, processing, taxes is not included until the very last possible screen before clicking that buy button). Online retailers are struggling with where in the checkout process to surface the total price to be charged to reduce cart abandonment, while not showing the total figure too early in the process that it keeps shoppers from getting to checkout altogether. Recent research shows that providing total pricing prior to the checkout process dramatically reduces cart abandonment – as it serves as a filter to those shopping within a specific price band. Much of the cart abandonment discussion leads us to…       The free shipping / free returns question: it’s no secret that because of Amazon and programs like Prime, consumers expect free shipping, much to the chagrin of the smaller retailer. The reality is that if you’re not a mega-retailer, shipping is an expensive part of doing business that doesn’t allow most retailers to keep their prices low and offer free shipping. This has many retailers venturing out on the “free returns” path, especially in apparel. A number of retailers we spoke with are testing a flat rate shipping fee with free returns to see if they can crack the price threshold where shoppers are willing to pay for shipping with an added service. But, free shipping remains king.      Social ads and retargeting: they are working, but do they turn off consumers? That’s the big question. Every retailer we spoke with during a roundtable on the topic said that social ads and retargeting (where that pair of boots you’re been eyeing on a site magically follows you around the Internet) work and are meeting campaign goals. The larger question many retailers are asking is if this type of tactic is turning off a large number of shoppers, even if these campaigns are meeting their early goals. Retailers also mentioned that Facebook ads are working very well for them, especially when it comes to new customer acquisition, serving as a complimentary a channel to SEO when it comes to engaging new customers. While there are always new things to experiment with in retail, standard challenges are top of mind as retailers scramble to get ready for holiday. It will undoubtedly be another record-breaking online shopping season, but as retailers get more and more advanced with each Black Friday, expect some exciting things. This excitement needs to be backed by sound solutions and optimized operations. Then again, consumers are expecting more than ever, so I don’t doubt that retailers are already thinking about the possibilities of holiday 2015… and beyond. Customers who read this article, also found value in the following stories: Personalization for Retail: http://blogs.oracle.com/retail/entry/personalization_for_retailShop Direct User Experience Focus Drives Sales:https://blogs.oracle.com/retail/entry/shop_direct_user_experience_focusMaking Waves: Australian Online Retailer SurfStitch: https://blogs.oracle.com/oracleretail/entry/surf_stitchWhat’s new in Oracle Commerce v11.1 for RetailWhat the Content+Commerce Equation is Missing

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