package com.hanqi.jihe;
import java.util.*;
public class emplei {
//先创建emplei类
//定义类型
private String eid;
private String ename;
public emplei(String eid,String ename)
{
this.eid=eid;
this.ename=ename;
}
public String getEid() {
return eid;
}
public void setEid(String eid) {
this.eid = eid;
}
public String getEname() {
return ename;
}
public void setEname(String ename) {
this.ename = ename;
}
}
package com.hanqi.jihe;
import java.util.*;
public class Mapceshi {
public static void main(String[] args) {
//创建一个map集合
Map<String, String> mp = new HashMap<>();
//创建emplei对象,
emplei em1 = new emplei("001","1");
emplei em2 = new emplei("002","2");
emplei em3 = new emplei("003","3");
emplei em4 = new emplei("004","4");
emplei em5 = new emplei("005","5");
//将对象添加到mp集合中
mp.put(em1.getEid(), em1.getEname());
mp.put(em2.getEid(), em2.getEname());
mp.put(em3.getEid(), em3.getEname());
mp.put(em4.getEid(), em4.getEname());
mp.put(em5.getEid(), em5.getEname());
//遍历mp集合
Set <String> k =mp.keySet();
for(String i:k)
{
System.out.println(i+" "+mp.get(i));
}
//移除id为005的对象
mp.remove("005");
System.out.println();
//迭代器遍历
Iterator<String> it = k.iterator();
while(it.hasNext())
{
String str = it.next();
System.out.println(str+" "+mp.get(str));
}
}
}