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• How to design an exception logging table using HyperTable and access it via the Java client?

  - by ikevinjp

  If I have the following table schema to log an exception (in standard SQL schema): Table: ExceptionLog Columns: ID (Long), ExceptionClass (String), ExceptionMessage (String), Host (String), Port (Integer), HttpHeader (String), HttpPostBody (String), HttpMethod (String) How would I design the same thing in HyperTable (specifically, what is the best approach for efficiency)? And, how would I code it using the HyperTable Java client?

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• Java how to replace 2 or more spaces with single space in string and delete leading spaces only

  - by Nessa

  Looking for quick, simple way in Java to change this string " hello there " to something that looks like this "hello there" where I replace all those multiple spaces with a single space, except I also want the one or more spaces at the beginning of string to be gone. Something like this gets me partly there String mytext = " hello there "; mytext = mytext.replaceAll("( )+", " "); but not quite.

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• In java what is the diference between an object and a class?

  - by David

  In java what is the diference between an object and a class? The book i'm working from made it seem as though once a class is created it also exists as an object.

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• How to convert Hexadecimal to ASCII values in java?

  - by lakshmi

  Thanks for your answer... I have 31 32 2E 30 31 33 6byte hexadecimal number. I want to convert 31 32 2E 30 31 33 this 6 byte hexadecimal number into 12.013 ASCII number in java.

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• How to execute task for a specific period in Java.?

  - by Zakaria

  In fact I would execute a specific task( a set of instructions) for a determined period. For example : I want my program to execute the task for 5 minutes, if it gets the right result it stops , else it will continue executing normal task for the 5 minutes and in the end it tells me. How can I implement this in Java.

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• Java Regular Expression. Check if String contains ONLY Letters

  - by user69514

  How do I check if a String contains only letters in java? I want to write an if statement that will return false if there is a white space, a number, a symbol or anything else other than a-z A-Z. My string must contain ONLY letters. I thought I could do it this way, but I'm doing it wrong: if( ereg("[a-zA-Z]+", $myString)) return true; else return false;

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• In Java, is it possible for a super constructor invocation actually invoke a constructor in the calling class?

  - by John Assymptoth

  Super constructor invocation definition: [Primary.] [NonWildTypeArguments] super ( ArgumentListopt ) ; A super constructor call can be prefixed by an Primary expression. Example (taken from JLS): class Outer { class Inner{ } } class ChildOfInner extends Outer.Inner { ChildOfInner() { (new Outer()).super(); // (new Outer()) is the Primary } } Does a Primary expression exist that makes the call to super() the invocation of a constructor of the calling class? Or Java prevents that?

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• How can I use Java to place a jpg file into the clipboard, so that it can be pasted into any documen

  - by Mike King

  I often have to add my signature to a document. The document can be of different kinds. My signature is stored as an image in signature.jpg. I would like to write a Java program that automatically places this image in the clipboard, so that I only have to paste it into the document.

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• How to insert custom date time in oracle using java?

  - by shree

  Hi i have a column (type date).I want to insert custom date and time without using Preparedstatement .i have used String date = sf.format(Calendar.getInstance().getTime()); String query = "Insert into entryTbl(name, joinedDate, ..etc) values ("abc", to_date(date, 'yyyy/mm/dd HH:mm:ss'))"; statement.executeUpdate(query); but am getting literal doesnot match error. so even tried with "SYSDATE".Its inserting only date not time.So how to insert the datetime using java into oracle?please any one help..

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• How to debug if using the java.io.Console class (netbeans).

  - by cchampion

  The java.io.Console class requires there to be a Console device (window). How can I debug if I am using this class? I'm using netbeans IDE.

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• Why are professors or schools picking Java over C++ to teach to students?

  - by Bryan Denny

  Is it just me or are most colleges teaching Java instead of C++ these days? I feel like I've been missing out with having zero classes teach or use C++ at all.

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• Is there an efficient tool to convert the .Net C# webservice to java webservice?

  - by Rachel

  Is there an efficient tool to convert the .Net C# webservice to java webservice. Is there any open source tool that can help?

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• In java what is the difference between an object and a class?

  - by David

  In java what is the difference between an object and a class? The book I'm working from made it seem as though once a class is created it also exists as an object.

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• Java: Check what processes are bound to a port?

  - by bguiz

  Hi, I am developing an application in Netbeans, and it is using JavaDB. I can connect to it and execute queries without issues, but for some reason, the "Output - JavaDB Database Process" pane within Netbeans keeps displaying Security manager installed using the Basic server security policy. Could not listen on port 1527 on host localhost: java.net.BindException: Address already in use How do I find out what process is already using, or bound to that port? On Ubuntu Karmic, Netbeans 6.7.1

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• Is it good practice to use the XOR (^) operator in Java for boolean checks?

  - by Pete

  I personally like the 'exclusive or' operator when it makes sense in context of boolean checks because of its conciseness. I much prefer to write if (boolean1 ^ boolean2) { //do it } than if((boolean1 && !boolean2) || (boolean2 && !boolean1)) { //do it } but I often get confused looks (from other experienced java developers, not just the newbies), and sometimes comments about how it should only be used for bitwise operations. I'm curious as to the best practices others use around the '^' operator.

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• Tips regarding how to create an Java Solitaire game.

  - by zo0mbie

  I got some question regarding the approach to create an solitaire game in java. What is the best way of handling the cards in Swing? How can I drag them, and what is the best way to snap them into their right positions?

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• Java API to create pdf with tables: any recommendations?

  - by jack

  I need to create a PDF containing some tables. When looking on google/stackoverflow the most frequent API seems to be iText but that's under the AGPL licence and thus not desirable for my purposes. I also frequently see apache pdfbox but that does not seem to have native support for tables (although a slightly hacky way was posted at Apache PDFBox Java library - Is there an API for creating tables? ) Does anyone have any recommendations?

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• I want to generate following JSON dataobject using org.json.simple.JSONObject, how to do it in java?

  - by Abhishek

  Hi all, I want to genrate following JSON dataobject using org.json.simple.JSONObject, how to do it in java? { friends : [ { name: 'David', interests: 'Cooking', }, { name: 'Charles', interests: 'Hiking', }, { name: 'Mary', interests: 'Football', }, ] } If code snipet is provided then that will be really helpful! Regards, Abhi

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• how can I create a temporary folder in java?

  - by Geo

  Duplicate: stackoverflow.com/questions/375910 Is there a way of creating a temporary folder in java ? I know of File's static method createTempFile, but this will only give me a temporary file.

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• Converting an int to a binary string representation in Java?

  - by ttreat31

  What would be the best way (ideally, simplest) to convert an int to a binary string representation in Java? For example, say the int is 156. The binary string representation of this would be "10011100".

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• What is the best way to manage unix process from java?

  - by erotsppa

  I'm looking for some simple tasks like listing all the running process of a user, or kill a particular process by pid etc. Basic unix process management from Java. Is there a library out there that is relatively mature and documented? I could run a external command from the JVM and then parse the standard output/error but that seems like a lot of work and not robust at all. Any suggestions?

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• Eclipse IDE vs Netbeans IDE, which one is better for Java EE 6 development?

  - by CMW

  Hi, I would like to know which IDE is better for Java EE 6 development. Can anyone give me the comparison of these 2 IDE in terms of features? Thanks.

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• Java is there any IDE/Tool that can pull SQL statements out in to a file?

  - by ring bearer

  Hi is there any tool available in Java world that will parse/read a source file and pull SQL statements out in to a text file. This is a complex task given that you can write SQL statements in different fashion within the source (ex: using + sign or using .append()) or even conditional building of SQL.

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• Is there a way to the hide win32 launch console from a Java program (if possible without JNI)

  - by Erik N

  You launch a java program from a console (maybe using a .bat script). I don't want the console to remain visible, I want to hide it. Is there a simple way to do this ? Without JNI ? Thanks.

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• Having another static method as the entry point of the java program?

  - by GK

  As we all know java program will start executing from the main method of the class. So was curious to know that is there any other way by which we can make another static method as the entry point, that is can we override this property of the JVM to start with some other method than main? many of you will ask why do you want to do this? so want to make it clear that its just a curiosity to know about. And if it is there then it might help in many ways

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