代理接口:
public interface ProxyInterface {
public abstract void action();
}
真实角色:
public class RealObject implements ProxyInterface{
@Override
public void action() {
// TODO Auto-generated method stub
System.out.println("Real Action method!");
}
}
代理角色
public class ProxyObject implements ProxyInterface{
private RealObject realObject;//代理角色中的真实角色
@Override
public void action() {
// TODO Auto-generated method stub
BeforeAction();
if(null == realObject){
realObject = new RealObject();
}
realObject.action();
AfterAction();
}
private void BeforeAction(){
System.out.println("do something before Action of RealObject");
}
private void AfterAction(){
System.out.println("do something after Action of RealObject");
}
}
测试类:
public class ProxyTest {
public static void main(String[]args){
ProxyObject proxyObject = new ProxyObject();//只能获取代理角色,
proxyObject.action();
}
}
测试结果;
do something before Action of RealObject
Real Action method!
do something after Action of RealObject
Java培训专家 疯狂软件官网:http://www.fkjava.org
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