设计模式17-责任链模式

简介

实例

public interface Handler {
public void operator();
}

public abstract class AbstractHandler {

private Handler handler;

public Handler getHandler() {
return handler;
}

public void setHandler(Handler handler) {
this.handler = handler;
}

}

public class MyHandler extends AbstractHandler implements Handler {

private String name;

public MyHandler(String name) {
this.name = name;
}

@Override
public void operator() {
System.out.println(name+"deal!");
if(getHandler()!=null){
getHandler().operator();
}
}
}

public class Test {

public static void main(String[] args) {
MyHandler h1 = new MyHandler("h1");
MyHandler h2 = new MyHandler("h2");
MyHandler h3 = new MyHandler("h3");

h1.setHandler(h2);
h2.setHandler(h3);

h1.operator();
}
}

备注