mapdemo.java

来自「自己编写的Java学习代码」· Java 代码 · 共 31 行

import java.util.*;
public class MapDemo
{
	public static void addString(){
		Map map = new LinkedHashMap();
		map.put("001","小明");
		map.put("002","小强");
		map.put("003","小红");
		
		//String str1 = (String)map.get("001");
		//System.out.println(str1);
		Set s = map.entrySet();
		Iterator iter = s.iterator();
		while(iter.hasNext()){	
			Map.Entry t = (Map.Entry)iter.next();
			System.out.println(t.getKey()+"  "+t.getValue());
		}
	}
	public static void addStudent(){
		Map map = new HashMap();
		Student s1 = new Student(1,"小明");
		map.put("001",s1);

		s1 =(Student) map.get("001");
		System.out.println(s1);
	}
	public static void main(String args[]){
		addString();
		//addStudent();
	}
}