For Loop In JAVA

For loop provides a concise way of writing the loop structure. Unlike a while loop, a for statement consumes the initialization, condition and increment/decrement in one line thereby providing a shorter, easy to debug structure of looping.

There are three types of for loops in java.

• For Loop
• For-each or Enhanced For Loop

For Loop Basic Steps

• Initialization condition: Here, we initialize the variable in use. It marks the start of a for loop. An already declared variable can be used or a variable can be declared, local to loop only.
• Testing Condition: It is used for testing the exit condition for a loop. It must return a boolean value. It is also an Entry Control Loop as the condition is checked prior to the execution of the loop statements.
• Statement execution: Once the condition is evaluated to true, the statements in the loop body are executed.
• Increment/ Decrement: It is used for updating the variable for next iteration.
• Loop termination:When the condition becomes false, the loop terminates marking the end of its life cycle.

Java For Loop

The simple for loop is same as C/C++. We can initialize variable, check condition and increment/decrement value.

Syntax:

for (initialization; condition; increment/decrement)
{
   //your statement
}

Example 

public class ForLoopDemo {  
public static void main(String[] args) {  
    for(int i=1;i<=10;i++){  
        System.out.println(i);  
    }  
}  
}  

Output :

1
2
3
4
5
6
7
8
9
10