Why are constructors used?
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Is the empty set a singleton?
How can we handle runtime exceptions? write one sample program? Can we write runtime exceptions beside the throws key word? if yes write sample program?
Package1 and Package2 both have a method name lets say "methodA" with different implementation. When I import both the packages in a java class how can I use both the methods?
What is widening and narrowing in java? Discuss with an example.
Is vector synchronized in java?
How do you add an arraylist to an array in java?
when you will synchronize a piece of your code? : Java thread
What is the difference between the prefix and postfix forms of the ++ operator?
What is super keyword explain with example?
How does predicate work in java?
What is the scope or life time of instance variables?
How to convert string to char and vice versa?