What is the use of arraylist in java?
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Can a static class have a constructor?
Can you explain the meaning of aggregation and composition
How hashset works internally in java?
whatis Home interface and Remoteinterface? with example?
Can we have multiple classes in single file ?
why HashTable not allow null key and value
What is use of arraylist in java?
How many arguments can be passed to main ()?
Does google use java?
What is an object in java and how is it created?
What is the need to implement Serializable interface (with no methods) for objects which are to be serialized ? We can write our own functionality which writes objects to streams then why we need to implement and tell JVM that which objects can be serialized.
What is the need of "creating and throwing an UserdefinedException" when the "Exception" class is already available?