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java.lang.IllegalStateException: Cannot (forward | sendRedirect | create session) after response has
...actually not true. They do certainly not behave differently than any other Java methods (expect of System#exit() of course). When the someCondition in above example is true and you're thus calling forward() after sendRedirect() or sendError() on the same request/response, then the chance is big that...
Converting a Java Keystore into PEM Format
I am trying to convert from a Java keystore file into a PEM file using keytool and openssl applicactions. But I could not find a good way to do the conversion. Any ideas?
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How do I set up IntelliJ IDEA for Android applications?
... all skip trivial steps.
So here's the full guide:
Download and install Java JDK (Choose the Java platform)
Download and install Android SDK (Installer is recommended)
After android SD finishes installing, open SDK Manager under Android SDK Tools (sometimes needs to be opened under admin's pr...
How can I initialize a String array with length 0 in Java?
The Java Docs for the method
String[] java.io.File.list(FilenameFilter filter)
includes this in the returns description:
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Ways to iterate over a list in Java
Being somewhat new to the Java language I'm trying to familiarize myself with all the ways (or at least the non-pathological ones) that one might iterate through a list (or perhaps other collections) and the advantages or disadvantages of each.
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Correct way to close nested streams and writers in Java [duplicate]
Note: This question and most of its answers date to before the release of Java 7. Java 7 provides Automatic Resource Management functionality for doing this easilly. If you are using Java 7 or later you should advance to the answer of Ross Johnson .
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Java 8 forEach with index [duplicate]
Is there a way to build a forEach method in Java 8 that iterates with an index? Ideally I'd like something like this:
3 A...
Does use of final keyword in Java improve the performance?
In Java we see lots of places where the final keyword can be used but its use is uncommon.
13 Answers
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Why java.lang.Object is not abstract? [duplicate]
Why is the Object class, which is base class of 'em all in Java, not abstract?
14 Answers
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Is there a Java reflection utility to do a deep comparison of two objects?
...quality assertion through reflection, with different options like ignoring Java default/null values and ignoring order of collections
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