代理模式

//代理设计模式
public interface Subject {
public void make() ;
}
class RealSubject implements Subject{
public void make() {
System.out.println("真实主题");
}
}
class ProxySubject implements Subject{
private Subject subject;
//要接受一个真实主题的操作对象
public ProxySubject(Subject subject){
this.subject = subject;
}
public void prepare() {
System.out.println("为真实主题做准备");
}
public void make() {
this.prepare();
this.subject.make();
this.destroy();
}
public void destroy(){
System.out.println("真实主题的收尾");
}
}