14.7-3

Emp类

package jihe;

public class Emp {
    
    public String id;
    public String name;

    public Emp(String id, String name)
    {
        this.id = id;
        this.name =name;
    }

}

Test类

package jihe;

import java.util.*;

public class Test {
    
    public static void main(String[] args)
    {

        //创建Map集合
        Map<String,String> map = new HashMap<>();
        
        //创建Emp对象
        Emp emp = new Emp("011","aaa");
        Emp emp1 = new Emp("012","bbb");
        Emp emp2 = new Emp("013","ccc");
        Emp emp3 = new Emp("014","ddd");
        Emp emp4 = new Emp("015","eee");
        Emp emp5 = new Emp("016","fff");
        
        //将Emp对象添加到Map集合中
        map.put(emp.id, emp.name);
        map.put(emp1.id, emp1.name);
        map.put(emp2.id, emp2.name);
        map.put(emp3.id, emp3.name);
        map.put(emp4.id, emp4.name);
        map.put(emp5.id, emp5.name);
        
        //移除id为015的对象
        map.remove("015");

        //遍历集合，打印
        Set<String> set = map.keySet();
        for(String id : set)
        {
            System.out.println("id = " + id + " name = " + map.get(id));
        }
        
    }

}

运行结果

id = 011 name = aaa
id = 012 name = bbb
id = 013 name = ccc
id = 014 name = ddd
id = 016 name = fff