Answer Posted / dijesh

hashmap is unsynchronised and hash table is
synchronised.....hashmap permits null...but hashtable does
not.

Justify your answer that you can't define a method inside another method in java, if you can then how?

1155

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What is double parsedouble in java?

1018

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Explain the difference between an Interface and an Abstract class?

1158

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What is the byte range?

1018

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What is regex java?

1077

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What is split return?

980

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Why are lists ordered in java?

1000

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

1031

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Give an example of use of pointers in java class.

1010

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What should I import for arraylist in java?

1022

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How is a variable stored in memory?

984

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When does a class need a virtual destructor?

996

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what is singleton class in java?

1027

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What is a null check?

979

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What are runtime exceptions?

1149

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