There may be a situation when you need to execute a block of code several number of times. In general, statements are executed sequentially: The first statement in a function is executed first, followed by the second, and so on.

Programming languages provide various control structures that allow for more complicated execution paths.

A loop statement allows us to execute a statement or group of statements multiple times and following is the general form of a loop statement in most of the programming languages −

Java programming language provides the following types of loop to handle looping requirements.

• while loop - Repeats a statement or group of statements while a given condition is true. It tests the condition before executing the loop body. See the WhileLoop.java example.
• for loop - Execute a sequence of statements multiple times and abbreviates the code that manages the loop variable.
• do...while loop - Like a while statement, except that it tests the condition at the end of the loop body. See DoWhileLoop.java
• Enhanced for loop - This is mainly used to traverse collection of elements including arrays. See EnhancedForLoop.java example