How to create a custom exception?
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Why singleton pattern is better than creating singleton class with static instance?
How listener identify that the event came from a particular object?
Does constructor return any value?
What is the association?
What are predefined functions?
What interface is extended by awt event listeners?
Can we have a try block without catch block?
What is internal variable?
How do you create a reference in java?
How many times finalize method will be invoked? Who invokes finalize() method in java?
Explain the difference between the Boolean & operator and the && operator?
What is a boolean expression in java?