public class JDKProxy2 implements InvocationHandler {    private Object targetObject;    public Object JDKProxy2(Object targetObject) {        this.targetObject = targetObject;        return Proxy.newProxyInstance(targetObject.getClass().getClassLoader(),                targetObject.getClass().getInterfaces(), this);    }    @Override    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {        System.out.println("1");        Object obj = method.invoke(targetObject, args);        System.out.println("2");        return obj;    }}