链接模式2

  1 package designPattern;
  2 /**
  3  * 链接模式2，功能全面
  4  * @author Administrator
  5  */
  6 public class A9_ChainTest2  {
  7     public static void main(String[] args) {
  8         Manager aManager = new Manager();
  9         ProjectManager1 aPM = new ProjectManager1();
 10         Programmer1 aProgrammer1 = new Programmer1();
 11         QA aQA = new QA();
 12         Others others = new Others();
 13 
 14         aManager.addChain(aPM);
 15         aPM.addChain(aProgrammer1);
 16         aProgrammer1.addChain(aQA);
 17         aQA.addChain(others);
 18 
 19         aManager.sendToChain("Get");
 20         aManager.sendToChain("Design");
 21         aManager.sendToChain("Coding");
 22         aManager.sendToChain("Test");
 23         aManager.sendToChain("Kill La Deng !");
 24     }
 25 }
 26 interface Chain  {
 27     public abstract void addChain(Chain c);
 28     public abstract void sendToChain(String mesg);
 29     public abstract Chain getChain();
 30 }
 31 class Manager implements Chain {
 32     private Chain nextChain = null;
 33     private String responsibility = "Get Project";;
 34 
 35     public Manager() { }
 36 
 37     public void addChain(Chain c) {
 38         nextChain = c;
 39     }
 40 
 41     public Chain getChain() {
 42         return nextChain;
 43     }
 44 
 45     public void sendToChain(String mesg) {
 46         if(mesg.equals(responsibility)) {
 47             System.out.println("A manager  -->  Get a Project");
 48         } else {
 49             if(nextChain != null) {
 50                 nextChain.sendToChain(mesg);
 51             }
 52         }
 53     }  
 54 }
 55 class Others implements Chain {
 56     private Chain nextChain = null;
 57     
 58     public Others() {
 59     }
 60     public void addChain(Chain c) {
 61         nextChain = c;
 62     }
 63     
 64     public Chain getChain() {
 65         return nextChain;
 66     }
 67     
 68     public void sendToChain(String mesg) {
 69             System.out.println("No one can handle -->  " + mesg);
 70     } 
 71 }
 72 class Programmer1 implements Chain {
 73     private Chain nextChain = null;
 74     private String responsibility = "Coding";
 75     
 76     public Programmer1() {
 77     }
 78     public void addChain(Chain c) {
 79         nextChain = c;
 80     }
 81     
 82     public Chain getChain() {
 83         return nextChain;
 84     }
 85     
 86     public void sendToChain(String mesg) {
 87         if(mesg.equals(responsibility)) {
 88             System.out.println("A Programmer1  -->  Coding");
 89         } else {
 90             if(nextChain != null) {
 91                 nextChain.sendToChain(mesg);
 92             }
 93         }
 94     } 
 95 }
 96 class ProjectManager1 implements Chain {
 97     private Chain nextChain = null;
 98     private String responsibility = "Design";
 99     
100     public ProjectManager1() {
101     }
102     public void addChain(Chain c) {
103         nextChain = c;
104     }
105     
106     public Chain getChain() {
107         return nextChain;
108     }
109     
110     public void sendToChain(String mesg) {
111         if(mesg.equals(responsibility)) {
112             System.out.println("A PM  -->  Design");
113         } else {
114             if(nextChain != null) {
115                 nextChain.sendToChain(mesg);
116             }
117         }
118     }  
119 }
120 class QA implements Chain {
121     private Chain nextChain = null;
122     private String responsibility = "Test";
123     
124     public QA() {
125     }
126     public void addChain(Chain c) {
127         nextChain = c;
128     }
129     
130     public Chain getChain() {
131         return nextChain;
132     }
133     
134     public void sendToChain(String mesg) {
135         if(mesg.equals(responsibility)) {
136             System.out.println("A QA  -->  Test");
137         } else {
138             if(nextChain != null) {
139                 nextChain.sendToChain(mesg);
140             }
141         }
142     }
143 }