Answer Posted / munna

in abstraction we ca have abstract method and normal method
but in interface we must and should write only abstract methods

Explain wrapper classes in java?

528

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What are the application of stack?

500

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What is array list in java?

591

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Explain about instanceof operator in java?

606

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what is meant wrapper classes?

604

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What is difference between == equals () and compareto () method?

530

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What is the final field modifier?

545

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What is structure of java heap? What is perm gen space in heap?

540

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What is the purpose of garbage collection in java?

653

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What is Applet Stub Interface ?

1962

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What is the difference between stream and buffer?

515

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Is array passed by reference in java?

578

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Why inputstreamreader is used in java?

544

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When should I use stringbuffer?

571

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Explain why wait(), notify() and notifyall() methods are in object class rather than in thread class?

554

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