“`
//定義被裝飾者
public interface Human {
public void wearClothes();

public void walkToWhere();  

}

//定義裝飾者
public abstract class Decorator implements Human {
private Human human;

public Decorator(Human human) {  
    this.human = human;  
}  

public void wearClothes() {  
    human.wearClothes();  
}  

public void walkToWhere() {  
    human.walkToWhere();  
}  
 

}

//下面定義三種裝飾，這是第一個，第二個第三個功能依次細化，即裝飾者的功能越來越多
public class Decorator_zero extends Decorator {

public Decorator_zero(Human human) {  
    super(human);  
}  

public void goHome() {  
    System.out.println("進房子。。");  
}  

public void findMap() {  
    System.out.println("書房找找Map。。");  
}  

@Override  
public void wearClothes() {  
    // TODO Auto-generated method stub  
    super.wearClothes();  
    goHome();  
}  

@Override  
public void walkToWhere() {  
    // TODO Auto-generated method stub  
    super.walkToWhere();  
    findMap();  
}  
 

}

public class Decorator_first extends Decorator {

public Decorator_first(Human human) {  
    super(human);  
}  

public void goClothespress() {  
    System.out.println("去衣櫃找找看。。");  
}  

public void findPlaceOnMap() {  
    System.out.println("在Map上找找。。");  
}  

@Override  
public void wearClothes() {  
    // TODO Auto-generated method stub  
    super.wearClothes();  
    goClothespress();  
}  

@Override  
public void walkToWhere() {  
    // TODO Auto-generated method stub  
    super.walkToWhere();  
    findPlaceOnMap();  
}  
 

}

public class Decorator_two extends Decorator {

public Decorator_two(Human human) {  
    super(human);  
}  

public void findClothes() {  
    System.out.println("找到一件D&G。。");  
}  

public void findTheTarget() {  
    System.out.println("在Map上找到神祕花園和城堡。。");  
}  

@Override  
public void wearClothes() {  
    // TODO Auto-generated method stub  
    super.wearClothes();  
    findClothes();  
}  

@Override  
public void walkToWhere() {  
    // TODO Auto-generated method stub  
    super.walkToWhere();  
    findTheTarget();  
}  

}

//定義被裝飾者，被裝飾者初始狀態有些自己的裝飾
public class Person implements Human {

@Override  
public void wearClothes() {  
    // TODO Auto-generated method stub  
    System.out.println("穿什麼呢。。");  
}  

@Override  
public void walkToWhere() {  
    // TODO Auto-generated method stub  
    System.out.println("去哪裡呢。。");  
}  

}
//測試類，看一下你就會發現，跟java的I/O操作有多麼相似
public class Test {
public static void main(String[] args) {
Human person = new Person();
Decorator decorator = new Decorator_two(new Decorator_first(
new Decorator_zero(person)));
decorator.wearClothes();
decorator.walkToWhere();
}
}
“`