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• Java Terminology: Why compile-time error and not compile-time exception?

  - by Mandar

  This may sound awkward ... But I didn't understand it. Why do we have compile-time error and not compile-time exception in java ? I mean to say that we never say compile-time exception. We tend to say it as compile-time error. Is there any specific reason for the same ?? Any suggestions are welcomed.... Thanks !

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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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• Anyone know of a Java reporting tools which has a web based visual report designer?

  - by kwyjibo

  We're currently evaluating different Java reporting engines, and having a web-based ad-hoc report designer is a requirement. We don't need anything too fancy, but we need users to be able to define a report with columns X, grouped by Y, sorted by Z, etc... We've found that many of the open source tools do have graphical report designers, but the designers are typically not web based. (For example, iReport from JasperReports seems to be an application, not a web tool) Can anyone recommend a reporting tool which meets this web-based requirement?

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• Is it possible to access the Mac Address book API from pure Java?

  - by Fin

  Just wondering if it is possible to access the Mac OS X Address Book API's from pure Java 6 code? I want to keep this completely platform independent as my program is built for Windows & Linux also (open source & free: http://jsmsirl.sourceforge.net/). Any help is much appreciated!

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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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• 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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• Why catch Exceptions in Java, when you can catch Throwables?

  - by corfield

  Hi We recently had a problem with a Java server application where the application was throwing Errors which were not caught because Error is a separate subclass of Throwable and we were only catching Exceptions. We solved the immediate problem by catching Throwables rather than Exceptions, but this got me thinking as to why you would ever want to catch Exceptions, rather than Throwables, because you would then miss the Errors. So, why would you want to catch Exceptions, when you can catch Throwables?

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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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• Should all resources in a java web application be uniquely named?

  - by morgancodes

  Trying to understand resources in java-land. I believe the following is true: Resources loaded via the classpath have no namespace, they only have a file name. It's wisest to always load resources via the classpath, never via the file system, even in unit tests. Therefore, resources must always have unique file names, or collisions will occur. Are there flaws in my assumptions or my conclusion?

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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 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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• 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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• 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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• 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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• 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 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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• 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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• 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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• 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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• 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 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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• 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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• 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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• Is it possible to set a default behaviour for custom (non-native) methods/functions in Java?

  - by Tom

  Is it possible to set a default behaviour for custom (non-native) methods/functions in Java? For example, I would like to change the default "Function" to do a System.out.println("message") whenever called. So, when a custom method/function is being created: public String testMethod() { //custom code } it should execute the newly added default behaviour (in this case the system output), before the custom code is run. Even if this would be a bad excercise, is it possible? Maybe by extending the function class or something?

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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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