package Map;/** *学生类 */public class student {    private String xingbie;    private String nome;    public String getXingbie() {        return xingbie;    }    public void setXingbie(String xingbie) {        this.xingbie = xingbie;    }    public String getNome() {        return nome;    }    public void setNome(String nome) {        this.nome = nome;    }    public student(String xingbie, String nome) {        super();        this.xingbie = xingbie;        this.nome = nome;    }    public student() {};        public void zbai () {        System.out.println(nome+"性别是："+xingbie);    }    }

package Map;/** * 测试类 */import java.util.*;public class studentDome {    public static void main(String[] args) {        student s1 = new student("男","李四");        student s2 = new student("女","小七");        Map
     
       m = new HashMap
      
       ();        m.put("LS", s1);        m.put("XQ", s2);        Set
       
         s = m.keySet();        for(String ss:s) {            student a=m.get(ss);            System.out.println(ss+a.getXingbie()+a.getNome());        }    }}
       
      
     

输出结果图：

 

代码下载链接：

链接：https://pan.baidu.com/s/1aCjHFn807YTylPk4r5_vNA

提取码：siqs