What is polymorphism java example?
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If all the methods in abstract class are declared as abstract then what is difference between abstract class and in interface?
Why do we use predicate in java?
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.
Which class is the superclass of all classes?
how and when compiler knows that the Java code throws the checked Exception.
write a program to create an vector with string(add,remove) operation.and value should be enter through keyboard.
Can a boolean be null java?
Is java call by reference?
What is the use of bin and lib in JDK?
What is the purpose of finalization?
What is the purpose of stub and skeleton?
How do you reverse a string in java?