Answer Posted / ravikiran(aptech mumbai)

java.lang
java.util
java.net
java.io
java.awt
java.sql

Can we extend singleton class?

520

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What is classname class in java?

524

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How big is a pointer?

542

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Can an interface have a class?

553

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Is java a digit method?

500

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What is method in java with example?

477

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What is a double?

576

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Why does the integer quotient -0/3 yield 0, but the double quotient -0.0/3.0 yields – 0.0?

592

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What are encapsulation, inheritance and polymorphism?

517

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Which non-unicode letter characters may be used as the first character of an identifier?

583

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Is double bigger than float?

530

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Which collection is thread safe in java?

496

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What is anti pattern in programming?

485

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What is purpose of keyword void?

552

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How do you check if a string is lexicographically in java?

486

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