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  • What are the design decisions involved in choosing how to expose a Java web application?

    - by Gary Rowe
    There are many ways to expose a Java web application to the consumer: application container (JBoss etc), servlet container (Tomcat etc), OSGi (Knopflerfish etc), self-executable WAR (Winstone etc) and so on. Are there any clear considerations where one approach should be favoured over another? As an example, could a collection of self-executable WARs running as raw Unix processes outperform the same applications deployed within Tomcat taking into account administration and scalability concerns?

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  • Ideal web application framework for newcomers and whether it is better to use Java or PHP based framework?

    - by Pawan
    My primary question is whether a Java based web application framework is better or a PHP based one and why? Moreover, if I were just starting web development then what would be some ideal frameworks to start with, considering I may want to make a full CMS out of it later? I am not looking for a 'best', rather some good recommendations as I understand that CodeIgnitor has not got a long way to go from here : http://heybigname.com/2012/05/06/why-codeigniter-is-dead/

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  • A way to return multiple return values from a method: put method inside class representing return value. Is it a good design?

    - by john smith optional
    I need to return 2 values from a method. My approach is as follows: create an inner class with 2 fields that will be used to keep those 2 values put the method inside that class instantiate the class and call the method. The only thing that will be changed in the method is that in the end it will assign those 2 values to the fields of the instance. Then I can address those values by referencing to the fields of that object. Is it a good design and why?

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  • When will java change to 64bit addressing and how can we get there faster?

    - by Ido Tamir
    Having to work with large files now, I would like to know when the java libraries will start switching to long for indexing in their methods. From Inputstreams read(byte[] b, int off, int len) - funnily there is long skip(long) also - to MappedByteBuffer to the basic indexing of arrays and lists, everything is adressed as int. Is there an official plan for enhancment of the libraries? Do initiatives exist to pressure oracle into enhancing the libraries, if there is no official plan yet?

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  • is good for one year experince Java Developer to do VB.NET development?

    - by tanghao
    I'm a java programmer with around one and half years experience. Recently my boss wants me to develop an excel add-in with VB.NET in next a few months or maybe I have to be fully in charge of this add-in in the further. It makes me quite nervous right now because I am really not sure what this VB.NET development experience could mean to me in the further as I am not so sure if it's good to diverse my experience in current stage. Any one could give some helps and suggestions?

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  • How to make my Oracle update/insert action through Java faster?

    - by gunbuster363
    I am facing a problem in my company that is - our program's speed is not fast enough. To be more specific, we are telecommunication company and this program handle call/internet serfing transaction made by every mobile phone users in our city. Because the amount of download content made by the iphone users is just too much, our program cannot handle them fast enough. The situation is, the amount of transaction made by users are double of the transaction processed by our program. Most of the running time of the program are dominated by DB transactions. I've search through the internet and browsed some sites ( for example: http://www.javaperformancetuning.com/tips/rawtips.shtml ) talking about Java performace in DB, but I cannot find a suggestion suitable for us. These advices are not applicable/already used, for instance: 1. Use prepared statements. Use parameterized SQL Already used prepared statement. Each time will use different parameter by clear parameters and set parameters. 2. Tune the SQL to minimize the data returned (e.g. not 'SELECT *'). Sure, already used. 3. Use connection pooling. We hold a single connection during the program's execution. And I doubt that pooling cannot solve the problem because our program act as 1 user, so there are no problem for concurrent access to DB. If anyone of you think pooling is good, please tell me why. Thanks. 4. Try to combine queries and batch updates. Cannot do it. Every query/insert/update is depend on the database's information. For example, we look up the DB for the client's information, if we cannot find his usage, we insert the usage into DB, otherwise we do update. 5. Close resources (Connections, Statements, ResultSets) when finished Sure. 6. Select the fastest JDBC driver. I don't know. I've search on the internet about the type of driver available and I am very confused. We use oracle.jdbc.driver.OracleDriver and we use thin instead of oci, that's all I know. In addition, our program is a two-tier way ( java <- oracle ) 7. Turn off auto-commit already done that. Looking forwards to any help.

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  • Is there any reason in a Java program for a special naming for a function arguments?

    - by gasan
    I'd like to know, why would I want to have a special prefixes for a function arguments, like "p_name", "p_age", "p_sex"? On the one hand it helps to distinguish parameter from local variable or field further in the function body, but would it help? On the other hand, I didn't saw such naming recommendations anywhere including official Java language conventions. Please advise any reasons for using such naming policy

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  • Should I continue teaching old Java input methods alongside the new ones?

    - by user1598390
    I've been imparting a Java introduction course for several years. Some slides explain how to read from files and keyboard using BufferedReaders, InputStreams, FileInputStreamReaders etc. I'm adding slides explaining how to achieve this using more up to date approaches like Scanner. Should I leave out the old BufferedReaders, InputStreams and FileInputStreamReaders slides altogether, and teach only the new methods, or should I continue to teach these methods for the sake of completeness ? Will my students benefit from learning how to read from files and keyboard the old way ?

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  • Is there a good reason I shouldn't use a java applet for a game?

    - by ryeguy
    I want to make a multiplayer browser-based game. The nice thing about using an applet is that I can make the client and the server in the same language (java/closure/scala/etc). I know there's html5 and javascript, but server side javascript isn't as mature as the jvm platform and browser support is still kind of flaky. Applets don't seem to be widely used (except for Runescape), but is there a reason they're unsuitable or is it just because of the bad reputation they developed in their infancy?

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  • How to insert images using labels in NetBeans IDE, Java? [migrated]

    - by Vaishnavi Kanduri
    I'm making a virtual mall using NetBeans IDE 7.3.1 I inserted images using the following steps: Drag and drop label onto frame Go to label properties Click on ellipsis of 'icon' option Import to project, select desired image Resize or reposition it accordingly. Then, I saved the project, copied the project folder into a pendrive, tried to 'Open Project' in mate's laptop, using the same Java Netbeans IDE version. When I tried to open the frames, they displayed empty labels, without images. What went wrong?

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  • Where should you store variables for a search program in java?

    - by Bored915
    I'm wondering which is a more effective storage method in java. Would be better to save variables that will not change in a class or a resource? They're going to be variables that contain a set amount so that later a search program will go through the list of variables so as to recognize possible options. Also if there is a more efficient method of storing them please say so or if i doesn't matter where i store them.

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  • ??????????????JSF2????Web????????????Java Developers Workshop 2012 Summer????

    - by ???02
    ???WebLogic Server 12c?????Java EE 6????1???Web??????????????????????JavaServer Faces 2(JSF2)????????????????????????????????????????8???????Java Developers Workshop 2012 Summer??????????????????Java?????????????(Fusion Middleware????????)????????????????(???) JSF2??10?????AJAX??Web?????????????? ?????? Fusion Middleware???????? ???Java?????????????? Java EE 6????Web?????????????·????????????JSF2??Struts???Java EE???????Web????????·????????????????????????????????????????JSF2????????????Web??????????????UI??????????????????????????? ??????????Java EE?????????????????????????????????Java EE 6?JSF2??????????????????“????????”?????????????Java EE 6???????????????????????JSF2????????·???????????????????????????????????????????????????????? ??????????????GlassFish????????NetBeans???????????????????????????????????????11??????????????????????????????????????????(???)???? ???????????????????Web?????????????????????????????????????????????????????????????? ????AJAX???????????????????????????????????????????????????·????????????????????????? ????????????????NetBeans???????????????????????????????????????????????????·?????????????????????????????????????????????? ???????????????????????JSF2?????????AJAX???????????·??????????????????????????????????????????????????????????????Web????????????????????AJAX????????????JSF???????????1?????????? ?Java EE????????????????????????????Java EE 6??AJAX??????????????????????????????????????XML???????????NetBeans?????IDE???????????????????????????????????(???) ???????·?????????????????????? JSF 2????????????????????????Web??????(?????)?????????????????????????????3???????????? ??????????Visual Basic?JavaFX?????????????·????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? JSF2???MVC??????HTTP???????????????????Controller???Faces Servlet?????View?????XHTML??????Model?????Managed Bean????????????? ?????View???????????JavaServer Pages(JSP)?????????????????????XHTML????????????????View???????????????????????JSP????Scriptlet???????????????????????????????????????????????????? JSF2???View?Model??????????????????????????????????????????????????????????? ?????????JSF2????????1???HTML???Web????????????????????????JSF???Web????????????????????????????????????????HTML????????????????????????HTML 4.0?DHTML???????????????????????JavaScript??????????????????????JavaScript???????????Web?????????resources???????????????????????JSF2?????????????????Web??????????????? ????????????????????????????????????????????????·???????Web?????????????????????????????????????? ?????????????????????????????????????????????????????????????????????????? ????JSF???????????????????????????????????????????? ????JSP?????????????????????????????????????????????????????HTML????Web??????????????????????????????????JSP?Web???????????????????????????????????????????????????XHTML????JSF????????View???JSF2?????????????????????????????????????/??????????? JSF???????????????? ????????????????????????JSF?????????????????????????????????JSF2????????????????????????????????????? Web?????????????????XHTML????????JSF?Facelets?Web???(View)???UIComponent?????????? ??View?????????????????????????????View(UIComponent???)?????? ??????View?????????????????????? ???????????????Bean Validation????????????????????? ???JSF2??@FacesValidator??????????????????????????????????????????????????Validator?implements??????validate????????????????????????????????????????????????? ????????????????Model?POJO????????????????ManagedBean?JPA Entity?????????Value?????????????????????????Component??????????????????Component?????????????????1????????????????????????????????????????????? JSF2??????????????????JSF 1.2???????????·????XML?????????????????JSF2?????????????????????????????????????????????????????????? ???JSF???Web?????????????????????ManagedBean?CDI(Contexts and Dependency Injection)???POJO????????????????????????????????????????????????????????????????????????ManagedBean???????????????????????????????????????????????????????????????????????? ??????????????????????JSF???????????????????????????????????????JSF2??????????????????????????????????????????????? ????????????????JSF?Web??????????????????????????????????????·????????????????????????????JSF????????????????????????????????????????????????????????????????

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  • Error running java -jar command

    - by dmantamp
    Hi all, I created a jar file using the following ANT script <manifestclasspath property="jar.classpath" jarfile="${bin.dir}/${jar.app.name}" maxparentlevels="0"> <classpath refid="main.class.path" /> </manifestclasspath> <target name="jar"> <mkdir dir="${build.dir}/lib/isp"/> <mkdir dir="${build.dir}/lib/jasper"/> <copy todir="${build.dir}/lib/jasper"> <fileset dir="${lib.jasper.dir}"> <include name="**/*.jar" /> </fileset> </copy> <copy todir="${build.dir}/lib/isp"> <fileset dir="${lib.isp.dir}"> <include name="**/*.jar" /> </fileset> </copy> <jar jarfile="${bin.dir}/${jar.app.name}" index="true" basedir="${classes.dir}" excludes="lib/mytest.jar " > <manifest> <attribute name="Main-Class" value="${main.class}" /> <attribute name="Class-Path" value="${jar.classpath}" /> </manifest> </jar> </target> The resulting jar file has the following MANIFEST.MF entry. Main-Class: dm.jb.Main Class-Path: lib/isp/OfficeLnFs_2.2.jar lib/isp/RXTXcomm.jar lib/isp/ba rbecue-1.0.6d.jar lib/isp/commons-logging-1.1.jar lib/isp/forms-1.0.5 .jar lib/isp/gnujaxp.jar lib/isp/helpUI.jar lib/isp/inspInstaller.jar lib/isp/itext-2.0.1.jar lib/isp/itext-2.0.2.jar lib/isp/jcalendar-1. 3.2.jar lib/isp/jcl.jar lib/isp/jcommon-1.0.10.jar lib/isp/jcommon-1. 0.9.jar lib/isp/jdnc-0_7-all.jar lib/isp/jdnc-runner.jar lib/isp/jdom .jar lib/isp/jfreechart-1.0.6.jar lib/isp/jlfgr-1_0.jar lib/isp/junit .jar lib/isp/log4j-1.2.9.jar lib/isp/looks-1.3.2.jar lib/isp/msbase.j ar lib/isp/mssqlserver.jar lib/isp/msutil.jar lib/isp/mysql-connector When I try to run the command java -jar mytest.jar, it fails and throws error saying dm.jb.Main not found. But I could run the class by specifying the classpath java -classpath dm.jb.Main Please help me DM

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  • How to compile jsoup through Ant?

    - by JackWM
    I tried to use Ant to compile the jsoup source. I can compile successfully, but cannot pass the test. Here is the process: jsoup version: 1.6.3 ; Ant version: 1.8.2 the source of jsoup is in the directory src/ I made a build file src/build.xml This file contains <project name="jsoup"> <target name="compile"> <mkdir dir="build/classes"/> <javac srcdir="src" destdir="build/classes" includeantruntime="false"/> </target> <target name="jar"> <mkdir dir="build/jar"/> <jar destfile="build/jar/jsoup.jar" basedir="build/classes"> <manifest> <attribute name="Main-Class" value="StateTrace"/> </manifest> </jar> </target> <target name="run"> <!--<java jar="build/jar/jsoup.jar" input="htmls/index.html" fork="true"/>--> <exec executable="java"> <arg value="-jar"/> <arg value="build/jar/jsoup.jar"/> <arg value="htmls/index.html"/> </exec> </target> </project> Note: 1. StateTrace.java is my own test program; 2. htmls/index.html is the input to StateTrace.java. Then I compile and run it with Ant: > ant compile > ant jar > ant run After this, I got err like: run: [exec] Exception in thread "main" java.lang.ExceptionInInitializerError [exec] at org.jsoup.nodes.Entities$EscapeMode.<clinit>(Unknown Source) [exec] at org.jsoup.nodes.Document$OutputSettings.<init>(Unknown Source) [exec] at org.jsoup.nodes.Document.<init>(Unknown Source) [exec] at org.jsoup.parser.TreeBuilder.initialiseParse(Unknown Source) [exec] at org.jsoup.parser.TreeBuilder.parse(Unknown Source) [exec] at org.jsoup.parser.HtmlTreeBuilder.parse(Unknown Source) [exec] at org.jsoup.parser.Parser.parse(Unknown Source) [exec] at org.jsoup.Jsoup.parse(Unknown Source) [exec] at StateTrace.main(Unknown Source) [exec] Caused by: java.lang.NullPointerException [exec] at java.util.Properties$LineReader.readLine(Properties.java:418) [exec] at java.util.Properties.load0(Properties.java:337) [exec] at java.util.Properties.load(Properties.java:325) [exec] at org.jsoup.nodes.Entities.loadEntities(Unknown Source) [exec] at org.jsoup.nodes.Entities.<clinit>(Unknown Source) [exec] ... 9 more [exec] Result: 1 BUILD SUCCESSFUL Total time: 0 seconds However, if I manually compiled all the java source, like javac src/org/jsoup/*.java src/org/jsoup/parser/*.java src/org/jsoup/examples/*.java src/org/jsoup/nodes/*.java src/org/jsoup/safety/*.java src/org/jsoup/select/*.java src/org/jsoup/helper/*.java I could compile successfully and pass my test. Any clue? Thanks!

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  • using Java interfaces

    - by mike_hornbeck
    I need to create interface MultiLingual, that allows to display object's data in different languages (not data itself, but introduction like "Author", "Title" etc.). Printed data looks like this : 3 grudnia 1998 10th of June 1924 Autor: Tolkien Tytul: LoTR Wydawnictwo: Amazon 2010 Author: Mitch Albom Title: Tuesdays with Morrie Publishing House: Time Warner Books 2003 37 360,45 PLN 5,850.70 GBP 3rd of December 1998 10th of June 1924 Author: Tolkien Title: LoTR Publishing House: Amazon 2010 Author: Mitch Albom Title: Tuesdays with Morrie Publishing House: Time Warner Books 2003 37,360.45 GBP 5,850.70 GBP Test code looks like this : public class Main { public static void main(String[] args){ MultiLingual gatecrasher[]={ new Data(3,12,1998), new Data(10,6,1924,MultiLingual.ENG), new Book("LoTR", "Tolkien", "Amazon", 2010), new Book("Tuesdays with Morrie", "Mitch Albom", "Time Warner Books",2003, MultiLingual.ENG), new Money(1232895/33.0,MultiLingual.PL), new Money(134566/23.0,MultiLingual.ENG), }; for(int i=0;i < gatecrasher.length;i++) System.out.println(gatecrasher[i]+"\n"); for(int i=0;i < gatecrasher.length;i++) System.out.println(gatecrasher[i].get(MultiLingual.ENG)+"\n"); } } So i need to introduce constants ENG, PL in MultiLingual interface, as well as method get(int language) : public interface MultiLingual { int ENG = 0; int PL= 1; String get(int lang); } And then I have class Book. Problem starts with the constructors. One of them needs to take MultiLingual.ENG as argument, but how to achieve that ? Is this the proper way? : class Book implements MultiLingual { private String title; private String publisher; private String author; public Book(String t, String a, String p, int y, MultiLingual lang){ } Or should I treat this MultiLingual.ENG as int variable , that will just change automatically constants in interface? Second constructor for book doesn't take MultLingual as argument, but following implementation is somehow wrong : public Book(String t, String a, String p, int y){ Book someBook = new Book(t, a, p, y, MultiLingual m); } I could just send int m in place of MultiLingual m but then I will have no control if language is set to PL or ENG. And finally get() method for Boook but I think at least this should be working fine: public String get(int lang){ String data; if (lang == ENG){ data = "Author: "+this.author+"\n"+ "Title: "+this.title+"\n"+ "Publisher: "+this.publisher+"\n"; } else { data = "Autor: "+this.author+"\n"+ "Tytul: "+this.title+"\n"+ "Wydawca: "+this.publisher+"\n"; } return data; } @Override public String toString(){ return ""; } }

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  • partial classes/partial class file

    - by Ravisha
    In C# .net there is a provision to have two different class files and make them a single class using the keyword partial keyword.this helps it to keep [for ex]UI and logic seperate. of course we can have two classes to achieve this one for UI and other for logic. Can this be achieved in java some how?

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  • Modifying platform/frameworks/base package

    - by tareqHs
    Hi, I'm planning to modify some bits in the platform/frameworks/base project in Android Donut r2. The modifications are very small and go into java packages android.graphics and android.text (the API isn't affected). What jar libraries do I have to copy from the recompiled platform? the modifications are small and I don't want to replace the whole system.. I'm trying to replace specific jar libraries. Thank you

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  • Partial overriding in Java (or dynamic overriding while overloading)

    - by Lie Ryan
    If I have a parent-child that defines some method .foo() like this: class Parent { public void foo(Parent arg) { System.out.println("foo in Function"); } } class Child extends Parent { public void foo(Child arg) { System.out.println("foo in ChildFunction"); } } When I called them like this: Child f = new Child(); Parent g = f; f.foo(new Parent()); f.foo(new Child()); g.foo(new Parent()); g.foo(new Child()); the output is: foo in Parent foo in Child foo in Parent foo in Parent But, I want this output: foo in Parent foo in Child foo in Parent foo in Child I have a Child class that extends Parent class. In the Child class, I want to "partially override" the Parent's foo(), that is, if the argument arg's type is Child then Child's foo() is called instead of Parent's foo(). That works Ok when I called f.foo(...) as a Child; but if I refer to it from its Parent alias like in g.foo(...) then the Parent's foo(..) get called irrespective of the type of arg. As I understand it, what I'm expecting doesn't happen because method overloading in Java is early binding (i.e. resolved statically at compile time) while method overriding is late binding (i.e. resolved dynamically at compile time) and since I defined a function with a technically different argument type, I'm technically overloading the Parent's class definition with a distinct definition, not overriding it. But what I want to do is conceptually "partially overriding" when .foo()'s argument is a subclass of the parent's foo()'s argument. I know I can define a bucket override foo(Parent arg) in Child that checks whether arg's actual type is Parent or Child and pass it properly, but if I have twenty Child, that would be lots of duplication of type-unsafe code. In my actual code, Parent is an abstract class named "Function" that simply throws NotImplementedException(). The children includes "Polynomial", "Logarithmic", etc and .foo() includes things like Child.add(Child), Child.intersectionsWith(Child), etc. Not all combination of Child.foo(OtherChild) are solvable and in fact not even all Child.foo(Child) is solvable. So I'm best left with defining everything undefined (i.e. throwing NotImplementedException) then defines only those that can be defined. So the question is: Is there any way to override only part the parent's foo()? Or is there a better way to do what I want to do?

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  • How to use EJB 3.1 DI in Servlet ? (Could not inject session bean by @EJB from web application)

    - by kislo_metal
    I am tying to merging web application(gwt, jpa) to an separate 2 application(business login in ejb/jpa and web client in gwt). Currently i can`t inject my beans from web application (simple servlet) I am using glassfish v3. module limbo(ejb jar) is in dependency of module lust (war). If I use lust with compiler output of limbo everything work perfect (if ejb in web application and the are deploying together as one application). Have I messed some container configuration ? Here is my steps: I have some limbo.jar (ejb-jar) deployed to ejb container. I do not use any ejb-jar.xml, only annotations. package ua.co.inferno.limbo.persistence.beans; import javax.ejb.Remote; @Remote public interface IPersistentServiceRemote { ArrayList<String> getTerminalACPList(); ArrayList<String> getBoxACPList(); ArrayList<String> getCNPList(); ArrayList<String> getCNSList(); String getProductNamebyID(int boxid); ArrayList<String> getRegionsList(String lang); long getSequence(); void persistEntity (Object ent); } package ua.co.inferno.limbo.persistence.beans; import ua.co.inferno.limbo.persistence.entitis.EsetChSchemaEntity; import ua.co.inferno.limbo.persistence.entitis.EsetKeyActionsEntity; @Local public interface IPersistentService { ArrayList<String> getTerminalACPList(); ArrayList<String> getBoxACPList(); ArrayList<String> getCNPList(); ArrayList<String> getCNSList(); String getProductNamebyID(int boxid); ArrayList<String> getRegionsList(String lang); long getSequence(); long persistPurchaseBox(EsetRegPurchaserEntity rp); void removePurchaseTempBox(EsetRegPurchaserTempEntity rpt); EsetRegionsEntity getRegionsById(long rid); void persistEntity (Object ent); } package ua.co.inferno.limbo.persistence.beans; import ua.co.inferno.limbo.persistence.entitis.EsetChSchemaEntity; import ua.co.inferno.limbo.persistence.entitis.EsetKeyActionsEntity; import ua.co.inferno.limbo.persistence.entitis.EsetRegBoxesEntity; import javax.ejb.Stateless; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; @Stateless(name = "PersistentService") public class PersistentServiceEJB implements IPersistentService, IPersistentServiceRemote{ @PersistenceContext(unitName = "Limbo") EntityManager em; public PersistentServiceEJB() { } ......... } Than i trying to use PersistentService session bean(included in limbo.jar) from web application in lust.war (the limbo.jar & lust.war is not in ear) package ua.co.lust; import ua.co.inferno.limbo.persistence.beans.IPersistentService; import javax.ejb.EJB; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; @WebServlet(name = "ServletTest", urlPatterns = {"/"}) public class ServletTest extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { service(request, response); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { service(request, response); } @EJB private IPersistentService pService; public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String hi = pService.getCNPList().toString(); System.out.println("testBean.hello method returned: " + hi); System.out.println("In MyServlet::init()"); System.out.println("all regions" + pService.getRegionsList("ua")); System.out.println("all regions" + pService.getBoxACPList()); } } web.xm <?xml version="1.0" encoding="UTF-8"?> <web-app 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" version="3.0"> <servlet> <servlet-name>ServletTest</servlet-name> <servlet-class>ua.co.lust.ServletTest</servlet-class> </servlet> </web-app> When servelt is loading i ge 404 eror (The requested resource () is not available.) And errors in logs : global Log Level SEVERE Logger global Name-Value Pairs {_ThreadName=Thread-1, _ThreadID=31} Record Number 1421 Message ID Complete Message Class [ Lua/co/inferno/limbo/persistence/beans/IPersistentService; ] not found. Error while loading [ class ua.co.lust.ServletTest ] javax.enterprise.system.tools.deployment.org.glassfish.deployment.common Log Level WARNING Logger javax.enterprise.system.tools.deployment.org.glassfish.deployment.common Name-Value Pairs {_ThreadName=Thread-1, _ThreadID=31} Record Number 1422 Message ID Error in annotation processing Complete Message java.lang.NoClassDefFoundError: Lua/co/inferno/limbo/persistence/beans/IPersistentService; ejb jar was deployed with this info log : Log Level INFO Logger javax.enterprise.system.container.ejb.com.sun.ejb.containers Name-Value Pairs {_ThreadName=Thread-1, _ThreadID=26} Record Number 1436 Message ID Glassfish-specific (Non-portable) JNDI names for EJB PersistentService Complete Message [ua.co.inferno.limbo.persistence.beans.IPersistentServiceRemote#ua.co.inferno.limbo.persistence.beans.IPersistentServiceRemote, ua.co.inferno.limbo.persistence.beans.IPersistentServiceRemote] Log Level INFO Logger javax.enterprise.system.tools.admin.org.glassfish.deployment.admin Name-Value Pairs {_ThreadName=Thread-1, _ThreadID=26} Record Number 1445 Message ID Complete Message limbo was successfully deployed in 610 milliseconds. Do i nee to add some additional configuration in a case of injections from others application? Some ideas?

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  • AccessControlException: access denied - caller function failed to load properties file

    - by Michael Mao
    Hi all: I am having a jar archive environment which is gonna call my class in a folder like this: java -jar "emarket.jar" ../tournament 100 My compiled class is deployed into the ../tournament folder, this command runs well. After I changed my code to load a properties file, it gets the following exception message: Exception in thread "main" java.security.AccessControlException: access denied (java.io.FilePermission agent.properties read) at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at java.lang.SecurityManager.checkRead(Unknown Source) at java.io.FileInputStream.<init>(Unknown Source) at java.io.FileInputStream.<init>(Unknown Source) at Agent10479475.getPropertiesFromConfigFile(Agent10479475.java:110) at Agent10479475.<init>(Agent10479475.java:100) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at java.lang.Class.newInstance0(Unknown Source) at java.lang.Class.newInstance(Unknown Source) at emarket.client.EmarketSandbox.instantiateClientObjects(EmarketSandbox.java:92) at emarket.client.EmarketSandbox.<init>(EmarketSandbox.java:27) at emarket.client.EmarketSandbox.main(EmarketSandbox.java:166) I am wondering why this security checking will fail. I issue the getPropertitiesFromConfigFile() function inside my class's default constructor, like this: public class Agent10479475 extends AbstractClientAgent { //default constructor public Agent10479475() { //set all properties to their default values in constructor FT_THRESHOLD = 400; FT_THRESHOLD_MARGIN = 50; printOut("Now loading properties from a config file...", ""); getPropertiesFromConfigFile(); printOut("Finished loading",""); } private void getPropertiesFromConfigFile() { Properties props = new Properties(); try { props.load(new FileInputStream("agent.properties")); FT_THRESHOLD = Long.parseLong(props.getProperty("FT_THRESHOLD")); FT_THRESHOLD_MARGIN = Long.parseLong(props.getProperty("FT_THRESHOLD_MARGIN ")); } catch(java.io.FileNotFoundException fnfex) { printOut("CANNOT FIND PROPERTIES FILE :", fnfex); } catch(java.io.IOException ioex) { printOut("IOEXCEPTION OCCURED :", ioex); } } } My class is loading its own .properties file under the same folder. why would the Java environment complains about such a denial of access? Must I config the emarket.client.EmarketSandbox class, which is not written by me and stored inside the emarket.jar, to access my agent.properties file? Any hints or suggestions is much appreciated. Many thanks in advance.

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  • After HTTP GET request, the resulting string is cut-off - content has been consumed

    - by Jayomat
    hi all, I'm making a http get request like this: try { HttpClient client = new DefaultHttpClient(); String getURL = "http://busspur02.aseag.de/bs.exe?SID=5FC39&ScreenX=1440&ScreenY=900&CMD=CR&Karten=true&DatumT="+day+"&DatumM="+month+"&DatumJ="+year+"&ZeitH="+hour+"&ZeitM="+min+"&Intervall=60&Suchen=(S)uchen&GT0=Aachen&T0=H&HT0="+start_from+"&GT1=Aachen&T0=H&HT1="+destination+""; HttpGet get = new HttpGet(getURL); HttpResponse responseGet = client.execute(get); HttpEntity resEntityGet = responseGet.getEntity(); if (resEntityGet != null) { //do something with the response Log.i("GET RESPONSE",EntityUtils.toString(resEntityGet)); } ........ It all works well... the only problem: the output from Log.i is cut-off... It's not the complete html page. If I make the same request in a browser, I get 3x the output in opposition to making the request in the emulator and using the above code.... what's wrong? ERROR: 04-30 14:01:01.287: WARN/System.err(1088): java.lang.IllegalStateException: Content has been consumed 04-30 14:01:01.297: WARN/System.err(1088): at org.apache.http.entity.BasicHttpEntity.getContent(BasicHttpEntity.java:84) 04-30 14:01:01.297: WARN/System.err(1088): at org.apache.http.conn.BasicManagedEntity.getContent(BasicManagedEntity.java:100) 04-30 14:01:01.307: WARN/System.err(1088): at org.apache.http.util.EntityUtils.toString(EntityUtils.java:112) 04-30 14:01:01.307: WARN/System.err(1088): at org.apache.http.util.EntityUtils.toString(EntityUtils.java:146) 04-30 14:01:01.307: WARN/System.err(1088): at mjb.project.AVV.ParseHTML.start(ParseHTML.java:177) 04-30 14:01:01.307: WARN/System.err(1088): at mjb.project.AVV.ParseHTML.onCreate(ParseHTML.java:139) 04-30 14:01:01.307: WARN/System.err(1088): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 04-30 14:01:01.327: WARN/System.err(1088): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459) 04-30 14:01:01.327: WARN/System.err(1088): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512) 04-30 14:01:01.327: WARN/System.err(1088): at android.app.ActivityThread.access$2200(ActivityThread.java:119) 04-30 14:01:01.347: WARN/System.err(1088): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863) 04-30 14:01:01.347: WARN/System.err(1088): at android.os.Handler.dispatchMessage(Handler.java:99) 04-30 14:01:01.347: WARN/System.err(1088): at android.os.Looper.loop(Looper.java:123) 04-30 14:01:01.347: WARN/System.err(1088): at android.app.ActivityThread.main(ActivityThread.java:4363) 04-30 14:01:01.347: WARN/System.err(1088): at java.lang.reflect.Method.invokeNative(Native Method) 04-30 14:01:01.357: WARN/System.err(1088): at java.lang.reflect.Method.invoke(Method.java:521) 04-30 14:01:01.357: WARN/System.err(1088): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 04-30 14:01:01.357: WARN/System.err(1088): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 04-30 14:01:01.357: WARN/System.err(1088): at dalvik.system.NativeStart.main(Native Method )

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  • Java "compare cannot be resolved to a type" error

    - by King Triumph
    I'm getting a strange error when attempting to use a comparator with a binary search on an array. The error states that "compareArtist cannot be resolved to a type" and is thrown by Eclipse on this code: Comparator<Song> compare = new Song.compareArtist(); I've done some searching and found references to a possible bug with Eclipse, although I have tried the code on a different computer and the error persists. I've also found similar issues regarding the capitalization of the compare method, in this case compareArtist. I've seen examples where the first word in the method name is capitalized, although it was my understanding that method names are traditionally started with a lower case letter. I have experimented with changing the capitalization but nothing has changed. I have also found references to this error if the class doesn't import the correct package. I have imported java.util in both classes in question, which to my knowledge allows the use of the Comparator. I've experimented with writing the compareArtist method within the class that has the binary search call as well as in the "Song" class, which according to my homework assignment is where it should be. I've changed the constructor accordingly and the issue persists. Lastly, I've attempted to override the Comparator compare method by implementing Comparator in the Song class and creating my own method called "compare". This returns the same error. I've only moved to calling the comparator method something different than "compare" after finding several examples that do the same. Here is the relevant code for the class that calls the binary search that uses the comparator. This code also has a local version of the compareArtist method. While it is not being called currently, the code for this method is the same as the in the class Song, where I am trying to call it from. Thanks for any advice and insight. import java.io.*; import java.util.*; public class SearchByArtistPrefix { private Song[] songs; // keep a direct reference to the song array private Song[] searchResults; // holds the results of the search private ArrayList<Song> searchList = new ArrayList<Song>(); // hold results of search while being populated. Converted to searchResults array. public SearchByArtistPrefix(SongCollection sc) { songs = sc.getAllSongs(); } public int compareArtist (Song firstSong, Song secondSong) { return firstSong.getArtist().compareTo(secondSong.getArtist()); } public Song[] search(String artistPrefix) { String artistInput = artistPrefix; int searchLength = artistInput.length(); Song searchSong = new Song(artistInput, "", ""); Comparator<Song> compare = new Song.compareArtist(); int search = Arrays.binarySearch(songs, searchSong, compare);

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  • How does java implement inner class closures?

    - by thecoop
    In Java an anonymous inner class can refer to variables in it's local scope: public class A { public void method() { final int i = 0; doStuff(new Action() { public void doAction() { Console.printf(i); // or whatever } }); } } My question is how is this actually implemented? How does i get to the anonymous inner doAction implementation, and why does it have to be final?

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