Controls

A control statement in java is a statement that determines whether the other statements will be executed or not. It controls the flow of a program.

If Statement Examples

1. Boolean Variable as Argument

class IfTest {
    public static void main(String[] args) {
        boolean x = false;
        if (x = false) { // This compile as if statement expects boolean value as parameter. This also throws false.
            System.out.println("Hello Mercury");
        } else {
            System.out.println("Hello Venus");
        }
    }
}

2. Integer Variable as Argument

This doesn't compile as if statement expects boolean value as parameter.

class IfTest{
    public static void main(String[] args){
        int x = 0;
        if(x){ // This doesn't compile as if statement expects boolean value as parameter.
            System.out.println("Hello Mercury");
        }else{
            System.out.println("Hello Venus");
        }
    }
}