Using Booleans

Java simple type boolean is for logical values.

boolean variable can have only one of two possible values, true or false.

boolean is the type returned by all relational operators and conditional expressions that control statements such as if and for.

When a boolean value is output by println(), "true" or "false" is displayed.

The following code defines a boolean type variable and assign false value to it.

public class Main {
  public static void main(String args[]) {
    boolean b;

    b = false;
    System.out.println("b is " + b);

  }
}

The output generated by this program is shown here:

b is false