public class Methods2 {
    
    public static void main (String[] args) {
	
	System.out.println( and(true,false) );
	boolean t1 = nand(true,false);
	boolean t2 = xor(true,false);
	System.out.println( and(t1,t2) );

    }

    // Return short-circuiting AND of t1,t2:
    public static boolean and(boolean t1, boolean t2) {
	return t1 && t2;
    }

    // Return exclusive OR of t1,t2:
    public static boolean xor(boolean t1, boolean t2) {
	return t1 != t2;
    }

    // Return NOT-AND of t1,t2:
    public static boolean nand(boolean t1, boolean t2) {
	return !(t1 & t2);

    }


}