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Java Desktop application: SWT vs. Swing [closed]
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Pros Swing:
part of java library, no need for
additional native libraries
works the same way on all platforms
Integrated GUI Editor in Netbeans and Eclipse
good online tutorials by Sun/Oracle
Supported by official java extensions (like java Open...
CATALINA_OPTS vs JAVA_OPTS - What is the difference?
... out the difference between Apache Tomcat variables - CATALINA_OPTS and JAVA_OPTS in SO and surprised to see that there is no question/answer posted here yet. So I thought of sharing it here (with answer) after finding out the difference. Check the answer/difference below.
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What is null in Java?
...hat it's "merely a special literal that can be of any reference type".
In Java, null == null (this isn't always the case in other languages). Note also that by contract, it also has this special property (from java.lang.Object):
public boolean equals(Object obj)
For any non-null reference ...
Predicate in Java
I am going through the code which uses Predicate in Java. I have never used Predicate . Can someone guide me to any tutorial or conceptual explanation of Predicate and its implementation in Java?
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Is there a destructor for Java?
Is there a destructor for Java? I don't seem to be able to find any documentation on this. If there isn't, how can I achieve the same effect?
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Choose between ExecutorService's submit and ExecutorService's execute
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I mean 'wrapped in a Future or not', of course. See the Javadoc for ScheduledThreadPoolExecutor#execute, for example.
– rxg
Jun 13 '13 at 9:28
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How to decompile a whole Jar file? [closed]
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2009: JavaDecompiler can do a good job with a jar: since 0.2.5, All files, in JAR files, are displayed.
See also the question "How do I “decompile” Java class files?".
The JD-Eclipse doesn't seem to have changed since late 200...
How do you kill a Thread in Java?
How do you kill a java.lang.Thread in Java?
16 Answers
16
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How do I find out what keystore my JVM is using?
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Your keystore will be in your JAVA_HOME---> JRE -->lib---> security--> cacerts. You need to check where your JAVA_HOME is configured, possibly one of these places,
Computer--->Advanced --> Environment variables---> JAVA_HOME
Your ...
What's the best way to build a string of delimited items in Java?
While working in a Java app, I recently needed to assemble a comma-delimited list of values to pass to another web service without knowing how many elements there would be in advance. The best I could come up with off the top of my head was something like this:
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