Answer Posted / vineet ahlawat

System is a class of java.lang package.
Out is a reference object in print stream class of java .io
package.
ptintln is a method in printstream class.

Is namespace same as package in java?

984

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Write a program in java to calculate the difference between the sum of the odd level and even level nodes of a binary tree.

1058

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Can we rethrow the same exception from catch handler?

1124

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Which way a developer should use for creating thread, i.e. Sub classing thread or implementing runnable.

929

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What is the difference between && and & in java?

1083

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Can one thread block the other thread?

1030

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What does business logic mean?

995

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What is flush buffer?

1050

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What is initial size of arraylist in java?

1057

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What is int short for?

1049

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When do we use synchronized methods in java?

1045

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write a program that list all permutations of ABCDEF in which A appears before B?

2489

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How do you compare two objects?

939

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Difference between == and .equals() ?

1001

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Write a program in java to find the maximum and minimum value node from a circular linked list.

1082

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