What is return null in java?

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Which variables are stored in stack?

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What is arrays aslist in java?

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What happens when main () method is declared as private?

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What is meant by bytecode?

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What is the difference between the reader/writer class hierarchy and the inputstream/outputstream class hierarchy in java programming?

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hi to all,i have a question on static block. i saved below as test.java class test extends a { static { System.out.println("test static"); } public static void main(String []dfs) { } } class a { static { System.out.println("a static"); } public static void main(String []asdf) { } } o/p as static test static but if i change base class as test class then class test { static { System.out.println("test static"); } public static void main(String []dfs) { } } class a extends test { static { System.out.println("a static"); } public static void main(String []asdf) { } } o/p test static explain me why "a static" wasn't print in second code when it is in derived class

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How do I stop concurrentmodificationexception?

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Explain Connection Pooling?

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Explain about class in java?

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5 What is Java exception handling?

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do I need to use synchronized on setvalue(int)? : Java thread

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