import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
interface HelloService {
void sayHello();
}
class HelloServiceImpl implements HelloService {
@Override
public void sayHello() {
System.out.println("Hello, world!");
}
}
class MyInvocationHandler implements InvocationHandler {
public MyInvocationHandler(Object target) {
this.target = target;
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
System.out.println("Before method execution");
System.out.println("After method execution");
return result;
}
}
public class DynamicProxyExample {
public static void main(String[] args) {
HelloService helloService = new HelloServiceImpl();
InvocationHandler invocationHandler = new MyInvocationHandler(helloService);
HelloService proxy = (HelloService) Proxy.newProxyInstance(
helloService.getClass().getClassLoader(),
helloService.getClass().getInterfaces(),
invocationHandler);
proxy.sayHello();
}
}
Complete programming code and related configurations:
