when asub class inherits a super class and overrides a public method of super class in sub class(public method in super class). why these methods needs to be public in sub class. (otherwise compile time error).

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What is use of a abstract variable?

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How transient variable is different from volatile variable?

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What is the purpose of the runtime class in java programming?

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Why is the main method static?

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Explain when classnotfoundexception will be raised ?

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What is the collections api?

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How Marker Interfaces are instruct to complete the desired need ?

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Is arraylist sorted in java?

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Can a class have 2 constructors?

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is it mandatory to deaclare all variables public static fianl in interfaces?if i declare like in the below program, public interface A { public static final int I=0; int j=0; } in interface A,what is the difference between I,j?

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What are sets in java?

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