Answer Posted / narasimha rao

System is a class
out is static object
println() is a method

What does nullpointerexception mean?

1088

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What is the major advantage of external iteration over internal iteration?

1111

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Can a singleton class be inherited?

973

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Is void a wrapper class?

952

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Difference between class#getinstance() and new operator ?

1213

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what is collatration?

3291

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What is the default size of set in java?

967

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What is flag in java?

996

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Define iterator and methods in iterator?

973

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If we allocate the memory using 'new' & de-allocated using 'free' then what will happen?

1047

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What is final, finally, finalize?

1113

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Explain about the select method with an example?

1183

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How listener identify that the event came from a particular object?

1995

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Can we sort set in java?

957

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Why is sizeof not a function?

1002

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