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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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• Cross-platform way to change java process priority

  - by argos

  I need to invoke .jar file in separate JVM from another java application, and it very CPU-consuming, so it should run with background priority in order not to affect the rest of the system. Is there any cross-platform method to do this?

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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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• 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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• java progress bar while applet loads

  - by Dan

  OK so, let's say I have a Java applet that takes a while to load (~5 secs). It's getting the mysql-connector.jar and it's loading. Well.. instead of the gray box with the coffee logo... can I make it have a simple progress bar with the percent? Thanks.

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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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• Java ACM subjects

  - by shangrila

  Who can send me some Java ACM subjects or Something like that?I wanna improve my OO thinking. To my gmail,please [email protected] Thanks in advance.

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• Java package scanner - find all classes with a given interface

  - by michael lucas

  In C# you can easily read all classes from a given assembly. I'm looking for equivalent feature in Java. I need this to automatically bind EJB beans to my Guice Module.

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• How does Java pick which method to call?

  - by Gaurav

  Given the following code: public class Test { public void method(Object o){ System.out.println("object"); } public void method(String s) { System.out.println("String"); } public void method() { System.out.println("blank"); } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Test test=new Test(); test.method(null); } } Java prints "String". Why is this the case?

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• Writing an older version of Berkeley DB in Java

  - by mrbombastic

  Is it possible to write out an older version of Berkeley DB using the Java interface? The version being 1.85/1.86.

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• integrate java facebook api in web application

  - by angelina

  Dear all, I want to integrate facebook api in my webapplication ,from where i can login a user ,gets his online friends ,sends notification messages,logout a user.plese suggesting which api to usein java.

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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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• java add dns cache record

  - by silverbandit91

  Is it possible to add a record to the dns cache from java? Or will I have to use the JNI?

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• How can I integrate Java with .Net?

  - by Luke

  I have one SDK that is available in Java and another SDK that is available for .Net and would like to write a single application that interfaces with both of them. I imagine I will need to use a cross platform communication framework that can support named pipes (or other in memory communication), what is the best choice? After some more research I found Hessian -- does anyone know anything about the maturity of this project?

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• Start a thread in a different process in Java

  - by kolm

  Hi there, is it possible to start a new thread in a different process in Java? I mean, I'm running a specific process and main thread, issuing ProcessBuilder for creating a new process. Before start() method is invoked, one must provide the command to be run in another process. Is it possible to start a new thread in newly created process? Thank you in advance for the reply. Best regards.

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• How to call System commands from a java program

  - by Andersson Melo

  I want to use system commands like mkdir and remdir running a java program. How can I do that?

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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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• taking integer input in java

  - by ruchir patwa

  I am actually new to java programming and am finding it difficult to take integer input and storing it in variables...i would like it if someone could tell me how to do it or provide with an example like adding two numbers given by the user..

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• Java: Finding objects in collections.

  - by Jake

  This problem occurs over and over. I have some complicated object, such as a Cat, which has many properties, such as age, favorite cat food, and so forth. A bunch of Cats are stored in a Java Collection, and I need to find all the Cats that are aged 3, or those whose favorite cat food is Whiskas. Surely, I can write a custom method that finds those Cats with a specific property, but this gets cumbersome with many properties; is there some generic way of doing this?

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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: 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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• Is the stack garbage collected in Java?

  - by girinie

  The heap memory is garbage collected in Java. Is the stack garbage collected as well? How is stack memory reclaimed?

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• Problems related to changing the encoding of a Java file

  - by Emanuil

  I need to use a few Cyrillic characters in a Java file and in order for Eclipse to allow me to do so I need to change the encoding for that file (currently to UTF-8). Are there any possible problems that this could cause?

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• How to generate a checksum for an java object

  - by Alex

  hi there, I'm looking for an solution to generate a checksum for any type of java object, which remains the same for every exection of an application which produces the same object. I tried it with object.hashcode(), but as I read in the api ....This integer need not remain consistent from one execution of an application to another execution of the same application. thank you, best regard alex

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• Qt Creator plugin for Java

  - by ebasconp

  Hi everybody: Do you know if there is some available Qt Creator plugin to add Java support to this nice IDE? Thanks in advance, Ernesto

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