The basic format of an if statement : if « Statements « SCJP

1. SCJP
2. Statements
3. if

if (booleanExpression) {
  System.out.println("Inside if statement");
}

public class MainClass{
    public static void main(String[] argv){
        int x = 1;
        int y = 0;
        int z = 0;
        int a = 0;
        if (x > 3) {
          System.out.println("x is greater than 3");
        } else {
          System.out.println("x is not greater than 3");
        }
        
        //The else block is optional, so you can also use the following:
        
        if (x > 3) {
          y = 2;
        }
        z += 8;
        a = y + x;
    }
}

x is not greater than 3