If Statement in Java

If block contains the condition, if condition is true, then the statement will execute and if the condition is not true then the statement will not execute.

Syntax :

if(boolean_expression){
/*statements will execute if the boolean expression is true */
}               

Block Diagram :

Example:

class Test
{
 public static void main(String []arg)
 {
  // local variable declaration:
  int a = 10; 
  // check the boolean condition
  if( a < 20 ) {
/* if condition is true then print 
   the following */

    System.out.print("a is less than 20");
   }
  System.out.print("\nvalue of a is : "+a);
 }
}           

a is less than 20
value of a is : 10

Next topic is if-else statement