For Loop In Java

For Loop ?

Loops are used in programming to repeat a specific block until some end condition is met.

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How for loop works?

➦Iitialization of the loop variable

➦Test of the loop repetition condition.

➦Change(update) of the loop control variable.

➦The initialization section can be used to declare a variable.

➦Like a while loop, the condition of a for loop is tested prior to executing the loop body.

➦Therefore, the body of a for loop will execute zero or more times.

➦The increment section can perform any calculation.

➦A for loop is well suited for executing statements a sepecific number of times that can be calculated or determined in advance.

Syntax :

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

Example 1:

Output :

Line 1
Line 2
Line 3
Line 4
Line 5

Example 2:

Output :

1 1
1 2
1 3
2 1
2 2
2 3
3 1
3 2
3 3

Example 3:

Output :

  * 
  * * 
  * * * 
  * * * * 
  * * * * *