重写equals和hashcode

为了比较两个对象是否相等，重写equals、和hashcode方法

1. 定义User对象，重写equals和hashcode方法

package com.wx.domain;

import java.util.Objects;

public class User {
	private String name;
	private String address;
	
	public User(){}
	public User(String name,String address){
		this.name = name;
		this.address = address;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
	@Override
	public String toString() {
		return "User [name=" + name + ", address=" + address + "]";
	}
	@Override
	public boolean equals(Object obj) {