Answer Posted / ravikiran(aptech mumbai)

abstartcion
inheritence
polymorhism
encapsulation

Can we assign null to double in java?

958

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List some important characteristics on jre

1027

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Are private methods final?

841

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Explain the overview of UDP messaging.

1077

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Can classes declared using the abstract keyword cab be instantiated?

1005

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Is it possible to write a regular expression to check if string is a number?

968

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What is meant by class?

946

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Does isempty check for null?

953

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What is the full form of jpeg?

897

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What is object data type?

940

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What is java lang object?

920

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What is nan inf?

975

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If a class is declared without any access modifiers, where may the class be accessed in java programming?

1133

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What are the differences between path and classpath variables?

976

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For class CFoo { }; what default methods will the compiler generate for you>?

1022

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