創(chuàng)建交通工具接口：Vehicle

package proxy;

public interface Vehicle {
    void drive();
} 

創(chuàng)建充電接口：Rechargable

package proxy;

public interface Rechargable {
    void recharge();
}

創(chuàng)建電動車實現(xiàn)類：ElectricCar

package proxy;

public class ElectricCar implements Rechargable, Vehicle {
  
    @Override  
    public void drive() {  
        System.out.println("電動車跑起來了!!!");
    }  
  
    @Override  
    public void recharge() {  
        System.out.println("電動車正在充電!!!");
    }  
  
}  

創(chuàng)建測試類：Test

package proxy;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

/**
 * @ClassName Test
 * @Description TODO
 * @Date 2019/8/6 9:16
 * @Created by sunyiwei
 */
public class Test {
    public static void main(String[] args){
        ElectricCar car = new ElectricCar();
        // 1.獲取對應(yīng)的ClassLoader
        ClassLoader classLoader = car.getClass().getClassLoader();
        // 2.獲取ElectricCar 所實現(xiàn)的所有接口
        Class[] interfaces = car.getClass().getInterfaces();
        /*
          3.根據(jù)上面提供的信息，創(chuàng)建代理對象 在這個過程中，
                 a.JDK會通過根據(jù)傳入的參數(shù)信息動態(tài)地在內(nèi)存中創(chuàng)建和.class 文件等同的字節(jié)碼
                 b.然后根據(jù)相應(yīng)的字節(jié)碼轉(zhuǎn)換成對應(yīng)的class，
                 c.然后調(diào)用newInstance()創(chuàng)建實例
         */

        Object proxy = Proxy.newProxyInstance(classLoader, interfaces, new InvocationHandler() {
            @Override
            public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                System.out.println("將要調(diào)用 " + method.getName() + " 方法!!!");
                method.invoke(car);
                System.out.println(method.getName() + " 調(diào)用完成!!!");
                return null;
            }
        });
        Vehicle vehicle = (Vehicle) proxy;
        vehicle.drive();
        Rechargable rechargable = (Rechargable) proxy;
        rechargable.recharge();
    }
}