What is the basic difference between string and stringbuffer object?
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How destructors are defined in java?
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Suppose if we have variable ' I ' in run method, if I can create one or more thread each thread will occupy a separate copy or same variable will be shared?
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What is abstract class? Explain
Can we use this () and super () in a method?
What does i ++ mean in Java?
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Can an object be null?