package com.feng; import cn.hutool.core.bean.BeanUtil; import org.junit.jupiter.api.Test; public class FinalTest { @Override public boolean equals(Object obj) { return super.equals(obj); } @Test public void eqlAndD(){ Girl g = new Girl("1"); Girl f = new Girl("1"); Girl h = new Girl("h"); String s1 = "1"; String s2 = "1"; System.out.println(s1.equals(s2)); System.out.println(g); System.out.println(f); System.out.println(g == f); System.out.println(g.equals(f)); System.out.println(g.equals(h)); } class Girl{ String name; public Girl(String name){ this.name = name; } } }