Can an object be null?
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What is aggregation?
what is mean by thread lock?
if the memory capacity is 700 presently occupied by process is 690. then another process request space(40) how this situation handled in java.
What is console based application in java?
State the significance of public, private, protected class?
What is the difference between add() and addElement() method in Vector Class ?
How to instantiate static nested classes in java?
what are the difference between Java and .Net?
when a servlet sends request for first time it uses the follwing methods a)init b)doget() c)dopost() d)service
What are data types in oop?
whats string ?
Explain scope or life time of local variables in java?