Answer Posted / avnish kumar dubey

Polymorphism

How to display names of all components in a Container?

2940

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Is null == null in java?

1107

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When should we create our own custom exception classes?

1016

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What is bom encoding?

995

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What is the use of System class?

1162

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Is array an object in java?

961

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How do you sort a string in alphabetical order in java?

919

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

1995

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What are the procedures?

1057

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What is map and hashmap in java?

1064

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Can we able to pass objects as an arguments in java?

1023

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Similarity and difference between static block and static method ?

919

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Does every java program need a main?

998

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What are the difference between string, string builder, and string buffer in java?

1121

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You're given a Boolean 2D matrix, can you find the number of islands?

1108

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