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48 lines (37 loc) · 1.02 KB
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package jvm;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
public class DynamicProxyTest {
interface IHello {
void sayHello();
}
static class Hello implements IHello {
@Override
public void sayHello() {
// TODO Auto-generated method stub
System.out.println("Hello World");
}
}
static class DynamicProxy implements InvocationHandler {
Object originalObj;
Object bind(Object originalObj) {
this.originalObj = originalObj;
return Proxy.newProxyInstance(originalObj.getClass()
.getClassLoader(), originalObj.getClass().getInterfaces(),
this);
}
@Override
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
// TODO Auto-generated method stub
System.out.println("welcome");
return method.invoke(originalObj, args);
}
}
public static void main(String[] args) {
// TODO Auto-generated method stub
IHello hello = (IHello) new DynamicProxy().bind(new Hello());
hello.sayHello();
}
}