//: reusing/Detergent.java

package com.reusing07;

class Cleanser {

private String s = "cleaner";

public void append(String a) { s += a; }

public void dilute() { append(" dilute() "); }

public void apply() { append(" apply() "); }

public void scrub() { append(" scrub() "); }

public String toString() { return s; }

public static void main(String[] args) {

Cleanser x = new Cleanser();

x.dilute(); x.apply(); x.scrub();

System.out.println(x);

}

}

public class Detergent extends Cleanser{

//private String s = "Detergent";

// Change a method

public void scrub() {

append(" Detergent.scrub() ");

super.scrub();

}

// Add the method to the interface

public void foam() { append(" foam() "); }

public static void main(String[] args) {

// TODO Auto-generated method stub

Detergent x = new Detergent();

x.dilute();

x.apply();

x.scrub();

x.foam();

System.out.println(x);

Cleanser.main(args);

}

}