Answer / subham chaudhary

It is an object of some class whose purpose is to indicate that a real object of that class does not exist. One common use for a null object is a return value from a member function that is supposed to return an object with some specified properties but cannot find such an object.

When do we need to use internal iteration? When do we need to use external iteration?

0 Answers  

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Java is Pass by Value or Pass by Reference?

0 Answers   BirlaSoft,

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What is the major drawback of internal iteration over external iteration?

0 Answers  

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can any one send me the example program of immutable class?

2 Answers   Arfin, TCS,

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why ,we are using jsp and html.which one is better?

2 Answers   Photon,

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What is supplier in java?

0 Answers  

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What are listeners in java and explain ?

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0 Answers   Hexaware,

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2 Answers  

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Name the method of a Container that can be used to cause a container to be laid out and redisplayed?

1 Answers  

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2 Answers   IBM,

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