Simple-levelDynamicProxy（1）

package poxy;
    import java.lang.reflect.InvocationHandler;
    import java.lang.reflect.Method;
    import java.lang.reflect.Proxy;
    /**
    * Simple Dynamic Proxy, show a single interface - a single instance case.
    *
    */
    public class SimpleDynamicProxy {
    /**
    * @param args
    */
    public static void main(String[] args) {
    //generate a hanlder
    ProxyHanlder hanlder=new ProxyHanlder();
    /*
    * register instance to hanlder, get the interface’s proxy
    */
    Dog dogProxy=(Dog) hanlder.generateProxyHanlder(new Dog(){
    @Override
    public String eat(String food) {
    return "Daniel’s dog just ate an "+ food +"!";
    }
    });
    //do method by proxy
    String result = dogProxy.eat("big bone");
    //take a look
    System.out.println(result);
    }
    }
    //Proxy Handler
    class ProxyHanlder implements InvocationHandler{
    //container
    Object obj = new Object();
    public Object generateProxyHanlder(Object obj) {
    //store it
    this.obj = obj;
    //return interface proxy
    return Proxy.newProxyInstance(obj.getClass().getClassLoader(),
    obj.getClass().getInterfaces(),
    this);
    }
    @Override
    public Object invoke(Object proxy, Method method, Object[] args)
    throws Throwable {
    Object result=null;
    result=method.invoke(obj, args);
    return result;
    }
    }
    //interface
    interface Dog{
    String eat(String food);
    }