第十五周作业

1.package finish;

import java.util.HashMap;
 
import java.util.Iterator;
 
import java.util.Map;
 
import java.util.Set;
public class csy {
 
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Map<String,String> map = new HashMap();
        map.put("欧欧", "Q仔");
        map.put("亚亚", "Q妹");
        map.put("美美", "Q妹");
        map.put("菲菲", "Q妹");
        System.out.println("使用Iterator遍历，企鹅的昵称和品种分别是:");
        Set<String> keyset = map.keySet();
        Iterator<String> iter = keyset.iterator();
        while(iter.hasNext()){
            String key=iter.next();
            String value=map.get(key);
            System.out.println(key+"\t"+value);
        }
        System.out.println("使用foreach遍历，所有企鹅的昵称和品种分别是:");
        for(String key:keyset){
            String sex=map.get(key);
            System.out.println(key+"\t"+sex);
        }
    }
 
}

 

 

2.package finish;
import java.util.HashMap;

import java.util.Iterator;
 
import java.util.Map;
 
import java.util.Set;
public class csy {
 
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Map<String,String> map=new HashMap();
        map.put("欧欧","Q仔");
        map.put("亚亚","Q妹");
        map.put("美美","Q妹");
        map.put("菲菲","Q妹");
        System.out.println("使用Iterator遍历,企鹅的昵称和品种分别是:");
        Set<String> keyset = map.keySet();
        Iterator<String> iter = keyset.iterator();
        while(iter.hasNext()){
            String key=iter.next();
            String value=map.get(key);
            System.out.println(key+"\t"+value);
        }
        System.out.println("使用foreach遍历,所有企鹅的昵称和品种分别是:");
        for (String key : keyset) {
            String sex = map.get(key);
            System.out.println(key + "\t" + sex);
        }
    }
 
}