class Lect120 extends Object120 {

    static char lastChar( String wrd ) {
        return charAt(wrd, length(wrd)-1);
    }

    
    
    static String callOut( String name ) {
        return "Hey, that means you, " + name + ".";
    }

    // you write `wwngbt`
    static String wwngbt( String nameToDiss ) {
        return "We will NEVER get back together.  " + callOut(nameToDiss);
    }
    
    // you write `wwngbt`
    static String wwngbt_obscured( String nameToDiss ) {
        //return "We will NEVER get back together.  " + callOut(toString(lastChar(nameToDiss)));
        return wwngbt( toString(lastChar(nameToDiss) ));
    }

    static void testWwngbt() {
        System.out.println( "Actual:  " + wwngbt("Barland") );
        System.out.println( "Desired: " + "We will NEVER get back together.  Hey, that means you, Barland." );
    
        System.out.println( "Actual:  " + wwngbt("Insane Clown Posse") );
        System.out.println( "Desired: " + "We will NEVER get back together.  Hey, that means you, Insane Clown Posse." );

        System.out.println( "Actual:  " + wwngbt("Taylor Swift") );
        System.out.println( "Desired: " + "We will NEVER get back together.  Hey, that means you, Taylor Swift." );
    }
    
   
    static void testWwngbt_obscured() {
        System.out.println( "Actual:  " + wwngbt_obscured("Barland")  );
        System.out.println( "Desired: " + "We will NEVER get back together.  Hey, that means you, d." );
    
        System.out.println( "Actual:  " + wwngbt_obscured("Insane Clown Posse") );
        System.out.println( "Desired: " + "We will NEVER get back together.  Hey, that means you, e." );

        System.out.println( "Actual:  " + wwngbt_obscured("Taylor Swift") );
        System.out.println( "Desired: " + "We will NEVER get back together.  Hey, that means you, t." );
    }
    
    static void testLastChar() {
        System.out.println( "Actual: " + lastChar("hello") );
        System.out.println( "Desire: " + 'o' );
        System.out.println( "Actual: " + lastChar("z") );
        System.out.println( "Desire: " + 'z' );
        System.out.println( "Actual: " + lastChar("huh?") );
        System.out.println( "Desire: " + '?' );
    }


    static void testCallOut() {
        System.out.println( "Actual:  " + callOut( "Caleb" ) );
        System.out.println( "Desired: " + "Hey, that means you, Caleb." );

        System.out.println( "Actual:  " + callOut( "Taylor Swift" ) );
        System.out.println( "Desired: " + "Hey, that means you, Taylor Swift." );
    }

    static void testAll() {
        System.out.println( "==== Testing all ====" );
        testLastChar();
        testCallOut();
        testWwngbt();
        testWwngbt_obscured();
    }

    
    
    
}