If-else Statement in Java

If block contains the condition, if condition is true, then the statements of if block will execute and if the condition is false then the statement of else block will execute.

Syntax :

if(boolean_expression) {
   /* statement(s) will execute if the boolean expression is true */
} else {
   /* statement(s) will execute if the boolean expression is false */

Block Diagram :



WAP to check no. is +ive or -ive.
import java.util.Scanner;
class Test
 public static void main(String []arg)
  Scanner sc;
  sc = new Scanner(System.in);
  int x ;
  System.out.print("Enter any number: ");
  x = sc.nextInt();
 if(x>=0) {
  System.out.print("X is Positive");
 else {
   System.out.print("X is Negative");
 } // main closed
}// class closed
Enter any number: 12
X is Positive
Enter any number: -12
X is Negative

Next topic is if-else ladder statement


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