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Using Build Flavors - Structuring source folders and build.gradle correctly

...her values from the flavors and build type to create the variant. For the Java source: src/main/java src/flavor1/java src/debug/java are all 3 used to create a single output. This means they can't define the same class. If you want to have a different version of the same class in the two flavor...
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Get login username in java

How can I get the username/login name in Java? 8 Answers 8 ...
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What causes java.lang.IncompatibleClassChangeError?

I'm packaging a Java library as a JAR, and it's throwing many java.lang.IncompatibleClassChangeError s when I try to invoke methods from it. These errors seem to appear at random. What kinds of problems could be causing this error? ...
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Which is more efficient, a for-each loop, or an iterator?

...ew for loop syntax, compare the generated bytecodes from the following two Java snippets. First the for loop: List<Integer> a = new ArrayList<Integer>(); for (Integer integer : a) { integer.toString(); } // Byte code ALOAD 1 INVOKEINTERFACE java/util/List.iterator()Ljava/util/Itera...
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java.lang.OutOfMemoryError : unable to create new native Thread”

We are getting "java.lang.OutOfMemoryError : unable to create new native Thread " on 8GB RAM VM after 32k threads (ps -eLF| grep -c java) ...
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Why do people still use primitive types in Java?

Since Java 5, we've had boxing/unboxing of primitive types so that int is wrapped to be java.lang.Integer , and so and and so forth. ...
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Getting random numbers in Java [duplicate]

I would like to get a random value between 1 to 50 in Java. 2 Answers 2 ...
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Exact difference between CharSequence and String in java [duplicate]

...you pasted: simply compile that, and have a look at the JVM bytecode using javap -v. There you will notice that both obj and str are references to the same constant object. As a String is immutable, this kind of sharing is all right. The + operator of String is compiled as invocations of various St...
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How do I set environment variables from Java?

How do I set environment variables from Java? I see that I can do this for subprocesses using ProcessBuilder . I have several subprocesses to start, though, so I'd rather modify the current process's environment and let the subprocesses inherit it. ...
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fastest (low latency) method for Inter Process Communication between Java and C/C++

I have a Java app, connecting through TCP socket to a "server" developed in C/C++. 10 Answers ...