Explain the difference between treeset and treemap in java?
What is the advantage of preparedstatement over statement?
long d =10;int i =0;i=d; /// is this possible? If d is very long number (10 digits or some thing) then?
What is a Null object?
Why do we need hashset in java?
What are the operands of instanceof operator?
Can we define package statement after import statement in java?
Can a final method be overloaded?
What does int argc char * argv [] mean?
What does pointer mean?
What is difference between wait and notify in java?
How do you delete a list in java?
explain copyonwritearraylist and when do we use copyonwritearraylist?