Answer Posted / ravikiran(aptech mumbai)

heap is the storage space for all the objects

Explain the difference between comparator and comparable in java?

1027

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How to display all the prime numbers between 1 and n (n is the number, get the input from user)

1022

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Explain importance of throws keyword in java?

1036

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What is a marker interface?

1225

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Can you declare an interface method static?

1104

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Explain 5 features introduced in jdk 1.7?

1063

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How is a structure different from array ?

1094

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How can we access some class in another class in java?

1053

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What is unmodifiable collection in java?

970

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Can we define a package statement after the import statement in java?

1116

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explain copyonwritearraylist and when do we use copyonwritearraylist?

988

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Does constructor return any value?

1083

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What is the main purpose of serialization in java?

1090

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Which sorting algorithm is in place?

1017

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describe synchronization in respect to multithreading? : Java thread

974

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