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• Write Java objects to file

  - by Mark Szymanski

  Is it possible to write objects in Java to a binary file? The objects I want to write would be 2 arrays of String objects. The reason I want to do this is to save persistent data. If there is some easier way to do this let me know. Thanks in advance!

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• Java: Programatic Way to Determine Current Windows User

  - by Justin Nelson - jjnguy

  I see many similar questions, however I want to find the Username of the currently logged in user using Java. Its probably something like: System.getProperty(current.user); But, I'm not quite sure.

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• Searching for a converter jsp to java

  - by jacksparrow2012

  Hi crew, I'm searching for a tool, which converts a jsp file into a java file without using a server like tomcat or something else. Can anyone help me out?

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• customize Java dialog Color, Appearance, Theme

  - by Aizaz

  I want to make Java JDialog appear like it is presented in the [Image][1] [1]: http://lh4.ggpht.com/_AnzmYq61hHI/S8RTAznktKI/AAAAAAAAAW0/c4HVCuchdjc/s1600-h/saveConfiguration%5B2%5D.jpg using JDK 6 Swing. Is it possible? if so kindly guide me. Image Link

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• Java or Scala for new greenfield projects ?

  - by sirmak

  Hi, After I read Bloch's discussion http://www.infoq.com/news/2010/04/bloch_java_future I started to think about "Do I have to switch to scala for new web developements" or is java preferred in all cases. What is your opinion ? Thanks,

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• How do I sort a set in Java?

  - by Jeremy Stein

  In Java, I have a set, and I want to turn it into a sorted list. Is there a method in the collections package that will do this for me?

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• Converting a String to Color in Java

  - by devoured elysium

  In .NET you can achieve something like this: Color yellowColor = Color.FromName("yellow"); Is there a way of doing this in Java without having to resort to reflection? PS: I am not asking for alternative ways of storing/loading colors. I just want to know wherever it is possible to do this or not.

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• Reduce frequency of deployments in a Java web application using Spring-MVC

  - by jboyd

  Is there a simple way to have your "Service Layer" deployed separately from your web layer, so that I can reduce the number of times per week that I have to, package, build and deploy the entire WAR file? I'm using Tomcat mostly, but I'm hoping for something more generic to Java web servers

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• how to add ctrl - click listeners in eclipse java editor

  - by jaime

  I want to add a ctrl - clic kind of listener to a custom javadoc annotation in eclipse java editor, thus I want to be able to move the focus to a specific place when the use ctrl - clic @customJavadoc annotation.

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• How know a variable type in java?

  - by Miguel Ribeiro

  Hi. I wanted a thing like I declare a variable: String a = "test"; And want to know what type it is, i.e., the output should be java.lang.String thanks in advance

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• number out of string in java

  - by Ali_IT

  I have something like "ali123hgj". i want to have 123 in integer. how can i make it in java?

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• Java Log ==> JTextArea

  - by asmo

  Need: Output a Java application's log into a GUI component, such as a JTextArea. Concern: Need to log things from any class, in a static manner. However, the GUI logger component must not be static (obviously) as it's the member of a parent component. What should I do?

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• Java - Problem with the classpath on Eclipse.

  - by Amokrane

  I'm trying to recompile a project I've been working on and I keep getting an error message when trying to load a property file: The system cannot find the path specified. I guess this has to do with the classpath. But I've added the path to the file in Properties- Java build path- Libraries (external class). I also checked the .classpath file generated by eclipse, and the path is really there! Why isn't Eclipse looking at the right path?

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• Passing data types from Java to C (or vice versa) using JNI

  - by user277460

  Using JNI can we pass custom data types from Java to C (or vice versa)? I see a mapping of primitive datatypes to types in C however not too sure if we can send across our own data types (e.g. Send across or return an Employee object or something!).

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• Implementing parallel coordinates for multi dimensional data in Java

  - by Algorist

  Hi, I am planning to implement parallel coordinates in java using JOGL library. Do you have any other suggestions? Thank you Bala

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• What are the Java equivalents to Linq and Entity Framework

  - by Colin Desmond

  Having played with Linq (to SQL and Objects) as well as the Entity Framework from Microsoft recently, I was wondering what the non-.Net (specifically Java) equivalents are?

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• How to make java-application standalone?

  - by elr

  I have to burn a java-application on a cd. This application have to run on every windows pc wihtout any installation (also jre shouldn't be installed) before.

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• How to create a true singleton in java?

  - by rjoshi

  I am facing a problem with my singleton when used across multiple class loaders. E.g Singleton accessed by multiple EJBs. Is there any way to create a singleton which has only one instance across all class loader? I am looking for pure java solution either using custom class loader or some other way.

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• Are there faster XML parsers in Java than Xalan/Xerces

  - by jm04469

  I haven't found many ways to increase the performance of a Java application that does intensive XML processing other than to leverage hardware such as Tarari or Datapower. Does anyone know of any open source ways to accelerate XML parsing?

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• Protected members in a superclass inaccessible by indirect subclass in Java

  - by MSumulong

  Why is it that in Java, a superclass' protected members are inaccessible by an indirect subclass in a different package? I know that a direct subclass in a different package can access the superclass' protected members. I thought any subclass can access its inherited protected members.

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• Tool for analyzing java core dump

  - by margus

  If i make java core dump with gcore then what is the best tool to analyze it? I need to be able make jmap, jstack, jstat etc and also i need to see values of all variables. Something that can take core dump as frozen JVM.

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• How to prompt a streamed file for downloading in Java / Tomcat

  - by Clem

  Hello, I'm creating a java web application runing on a Tomcat server. One of the functions fill in a StringBuffer variable with data. At the end, I would like to propose the user to download the generated content packaged in a text file. This without having to store the file on the server. I've been searching for a code snippet but couldn't find anything corresponding ... I hope I've been clear enough on my problem. Thanks in advance,

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• Are there any good books to learn C++ if you already know Java and C#

  - by JF LR

  Hi, I would like to know if you have any good books that teach C++ programming without repeating basic stuff. In fact, I already well know Java and C#. I also have a basic knowledge in C and assembly, so I understand a little bit pointer arithmetic, manual memory management and heap based allocation. I was looking at O'Reilly's C++ in a Nutshell and was also wondering if this book would be a good choice. Thank you

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• Finding Last Fired time using a Cron Expression in Java

  - by a-sak

  Is there a way in Java to find the "Last Fired Time" from a Cron Expression. E.g. If now = 25-Apr-2010 10pm, cron expression "0 15 10 ? * *" (quartz) should return me 25-Apr-2010 10:15am I do not care if we use standard cron expressions (like Unix and Quartz) or less popular ones if they can fetch me the correct "Last Fired Time"

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• .NET Attributes versus Java Annotations: Which Came First?

  - by Tom Tresansky

  I'm a .NET developer learning Java EE. These two concepts seem to serve the same exact purposes in either system. So which framework gets credit for inventing them?

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