动态代理是怎样实现的呢？怎么操作？

public class ProxyInovationHandler implements

InvocationHandler{

private Object target;//目标对象--真实对象

public void setTarget(object target){

this.target = target;

}

/**

public object getproxyo(）{

return

Proxy.newProxyinstance(this.hetClass(),getclassloader（),

target,getclass() getintertaces(),this);

/**

*Proxy是代理类

*method 代理类的调用处理程序的方法对象

**/

@overide

public object invoke(object proxy, method method,object [ ]

args）

throws Throwable(

log(method.getName()）;

Object result= method.invoke(target, args);

return result;

}

public void log(string methodtame){

throws Throwable

{ log(method.getName());

Object result=methodinvoke(target,args) ；

return result;

}

public void log(string methodName){

System.out.println(""执行""+methodName+""方法

"");

}

}

Chent.java 客户

public class client {

public static void main(string[ ] args){

Host host =new Host();

Proxy proxy=new Proxy(host);

proxy.rent();

}

}