Answer Posted / ravikiran(aptech mumbai)

singleton class is the class contains only one object

Can there be an abstract method without an abstract class?

938

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Can we define private and protected modifiers for the members in interfaces?

1091

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What are the major advantages of internal iteration over external iteration?

1043

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Can we have multiple classes in a single file?

974

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What is difference between stringbuffer and string?

953

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Can a list be null in java?

1041

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What are the access modifiers in java?

1033

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Give example to differentiate between call by value and call by reference.

1052

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Do you know why doesn't the java library use a randomized version of quicksort?

950

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Can we declare a class as abstract without having any abstract method?

995

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What is oop in java?

1049

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What does flag mean in java?

1021

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What is class and object in java?

1002

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What is the default value of the local variables?

1015

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what is anonymous class in java?

1028

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