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• Closest Java equivalent of ActiveMerchant that would work on Google App Engine?

  - by Chuck

  I want to build ecommerce functionality on Google App Engine for Java. What Java payment gateway library works closest to ActiveMerchant (from Ruby on Rails) and also works on GAE?

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• How to improve look and feel of JAVA swing GUI?

  - by Mandar

  Hi friends i am doing some project in java swing. The default look and feel of java swing gui is very boaring. Is there any way i can use a good look and feel? something like on web pages...

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• Best IDE macro tools to combat the verbosity of Java syntax for someone with carpal tunnel?

  - by Carlsberg

  I have a bad case of carpal tunnel so I'm looking for an editor that would make my Java programming less painful (literally!). Does anyone have any recommendations for tools that you can add to Eclipse, Netbeans or other IDEs to produce some of the repetitive code that's common in Java syntax? Overall what would be the best code editor for this purpose? (I'm coding on Ubuntu, in case it matters).

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• Is there any good JAVA lib for playing with WSDL's and WS-* bindings?

  - by Ole Jak

  Is there any good JAVA lib for playing with WSDL's and WS-* bindings - Is there any such lib or how to play with WSDL's and WS-* bindings from pure JAVA?

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• Java: print field in an image of other class?

  - by HH

  DirectoryReader.java public class DirectoryReader { public static void main(String[] args) { File myFile = new File(path); FileObject fileThing = new FileObject(myFile); //How to print the value of the hello-field from fileThing? } } FileObject.java public class FileObject { FileObject (File fileThing) { String hello = "Hello Cosmos!"; } }

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• Is it possible to run Java applets in the Android WebKit Browser?

  - by John Cooper

  Is it possible to run Java applets in the Android WebKit Browser? If not does anyone know when java applets will be supported?

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• I need to use "ö","ä"."ü" in my program, but java/android won't let me

  - by Jayomat

  Hi all, I need my program to send a request to a server. The problem is, the server only recognizes ös,äs und üs, but JAVA and/or Android don't know them. `How can I send a request with a String like "Hermann-Löns" without JAVA/Android "changing" the ö.... Oh and btw., "oe" isn't recognized by the server too, already tried that... thx for help!

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• Should I move from Java programming to Delphi programming?

  - by Everyone

  over the years i have been employed in a permanent position with firms that did their development work in Windows SDK, VC++, and most recently Java; in my own eyes, I am language independent. Should I move from Java to Delphi (assuming pay-scale remains unchanged)? I'm concerned because, for the most part, the net presents a relatively bleak picture for this particular skill.

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• What features should Java 7 onwards have to encourage switching from C#?

  - by _NT

  C# has a good momentum at the moment. What are the features that you would need to have in order to switch (or return) to Java? It would also be quite useful if people posted workarounds for these for the current Java versions, e.g. Nullables being wrapped around custom classes, to make this a much more interesting wiki.

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• How to give focus to default program of shell-opened file, from Java ?

  - by Rabarberski

  From within Java, I am opening an Excel file with the default file handler (MS Excel, in this case :-) ) using the method described in this stackoverflow question: Desktop dt = Desktop.getDesktop(); dt.open(new File(filename)); However, the Excel program doesn't get the focus. Is there any easy way to do so? Edit: There is a related stackoverflow question for C#, but I didn't find any similar Java method.

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• Easy way to convert regex to a java compatible regex?

  - by beagleguy

  hi all I have a regex defined in python/ruby/php that is like this "(forumdisplay.php\?.*page=%CURRENTPAGE%)" when I do it for java, I have to double escape that question mark to //? like so: "(forumdisplay.php\\?.*page=%CURRENTPAGE%)"; is there a function I can use to do that automatically? or would I need to change all my regexes over to work with the java regex engine? thanks

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• To read the hyperlink path of a text from Excel file via JAVA?

  - by Guru

  I have done upto reading text (String) from Excel file i could leverage the same into my JAVA. But now i have an other querry. Supposing if the text in excel is a hyperlink i need the link path of that text. Say: "hyperlink text" path manually mapped to say ("C:\Folder\iamge.jpg") I want this path in java. Can any one help me with this!

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• Is there any smart enough tool to build UML class-diagram based on not very complicated Java sources

  - by Roman

  I'm using IntelliJ IDEA and I tried its tool for building class diagram. Unfortunatelly, it draws classes from java package as well as necessary classes. That's why built diagram is very messed. Are there any more smart tool? Or, is there any way to 'turn off' drawing java classes in IDEA?

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• Best way to encode text data for XML in Java?

  - by Epaga

  Very similar to this question, except for Java. What is the recommended way of encoding strings for an XML output in Java. The strings might contain characters like "&", "<", etc.

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• Java: I want to print reverse of any String without using any predefine function?

  - by Sanjeev

  how to print reverse of String "java is object orientated language" without using any predefine function like reverse() in java? any idea.

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• How can I call a GWT RPC method on a server from a non GWT (but Java) gapplication?

  - by hansi

  I have a regular Java application and want to access an GWT RPC endpoint. Any idea how to make this happen? My GWT application is on a GAE/J and I could use REST for example but I already have the GWT RPC endpoints and don't want to build another façade. Yes, I have seen http://stackoverflow.com/questions/1330318/invoke-a-gwt-rpc-service-from-java-directly, but this discussion goes into a different direction.

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• Can I configure a resource path that contains java source files in eclipse?

  - by tangens

  Motivation In eclipse I'd like to configure a path as a resource path. This path contains some java files that I only want to handle as resources, i.e. I don't want eclipse to try to compile these files. I only want to read them as resources from within junit tests. Question Is there a way to configure eclipse so it won't try to compile the java files it found there?

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• Java NullPointerException. Why?

  - by user292844

  I am new to Java. I just read that class variables in Java have default value. I tried the following program. I was expecting to get the output as 0, which is the default value on an integer, but I get the NullPointerException. What am I missing? class Test{ static Integer iVar; public static void main(String...args) { System.out.println(iVar.intValue()); } }

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• how to pass string to a url and get the image from the webserver to the java SE application

  - by Nubkadiya

  how to pass string to a url in java. i want to download an image from a web server. before downloading a image i want to pass some values to that image then after that i want to download the image. can someone help me. in Java SE application

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• In Java, when should I use an abstract method in an interface?

  - by John Oxley

  I have the following interface in Java public interface IFoo { public abstract void foo(); public void bar(); } What is the difference between foo() and bar()? When should I use abstract? Both seem to accomplish what I want unless I'm missing something subtle? Update Duplicate of Why would one declare a Java interface method as abstract?

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• Java library for trees similar to JGraphT for graphs?

  - by lexicore

  I'm a big fan of JGraphT, a Java library for graphs. Could anyone recommend a similar Java library for trees? Preferrably FOSS. What I need is a good API, preferrably typesafe with generics which allows modelling different kinds of trees (with some user data attached to verticies/edges) and run different algorithms and operations on these trees. For instance, traverse or balance. At the moment I'm not interested in visualization of trees.

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• Why does the Java compiler complain about a local variable not having been initialized here?

  - by pele

  int a = 1, b; if(a > 0) b = 1; if(a <= 0) b = 2; System.out.println(b); If I run this, I receive: Exception in thread "main" java.lang.Error: Unresolved compilation problem: The local variable b may not have been initialized at Broom.main(Broom.java:9) I know that the local variables are not initialized and is your duty to do this, but in this case, the first if doesn't initialize the variable?

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• Learning from Java to C... ...What is the biggest challenge?

  - by Tattat

  I had experience on Java, because of some results, I need to code in C, is it difficult to switch from Java to C? And what is the biggest different between these two languages?

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• How to export a JAR file with a default Java heap size ?

  - by Amokrane

  Hi, In order to overcome a Java heap space problem, I need to extend the Java heap size up to 256 MB. I did it using Eclipse by passing -Xmx256m as a parameter during the execution. My problem is that I want to export my application as a JAR file. How to keep this configuration during the export? Thank you

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• Difference between FetchType LAZY and EAGER in Java persistence?

  - by leon

  Hi I am a newbie to Java persistence and Hibernate. What is the difference between FetchType LAZY and EAGER in Java persistence? Thanks

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