使用java反射机制实现java的深拷贝

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.util.Date;

import com.pdy.test.User;
//这就是一个实现了深拷贝的反射
public class UseReflectColne2 {

public static Object clone(Object obj) throws SecurityException, NoSuchMethodException, IllegalArgumentException, InstantiationException, IllegalAccessException, InvocationTargetException{

System.out.println("come on");
Class> clazz = obj.getClass();
//获取一个无参的构造方法
Constructor> constructor = clazz.getConstructor();
Object result = constructor.newInstance();

//获取所有的field
Field[] fields = clazz.getDeclaredFields();

if(fields != null)
for(int i=0; i