This is the most fundamental concepts required for java programmer. It allows smooth flow of execution of program. It controls the flow of program...

Writing methods avoid the rewriting same code again and again. Suppose you have block of statements in your program that will calculate sum of two numbers...

It is used for memory management. It can be applied to variable, method, inner class and static block. It means single copy storage. A variable which is defined with...

It is an entity that may vary during execution of program called as variable. Variable is a name which is associated with a value that can be changed...