What is number data type?
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What is the difference between stringbuffer and stringbuilder class?
What is the purpose of an interface?
Is math an abstract class in java?
Is vector ordered in java?
Can set contain duplicates?
In method overloading ,if i change the return type to Long instead of INT,is the program execute
what is instanceof operator used in java?
what is different between static and non static methods ,using example
What is the purpose of nested class in java?
What is pre increment and post increment in java?
Features of JAVA ? In which version of java synchronizedXXX() methods are included in Collections class.
what is mena by object block any what is the use of that