package TestMap
;
import java.util.*
;
/**
* Created by Administrator on 2017/5/5.
*/
public class Testpet {
public static void main(String[] args) {
Map pets =
new HashMap()
;
pets.put(
"旺旺", "企鹅")
;
pets.put(
"欧欧", "雪瑞娜")
;
pets.put(
"汤姆", "猫")
;
pets.put(
"杰瑞", "老鼠")
;
Set keys = pets.keySet()
;
/* 迭代输出方法一
Iterator it = keys.iterator();
while (it.hasNext()) {
String key = (String) it.next();
String value = (String) pets.get(key);
System.out.println(key + "\t\t" + value);
}*/
//方法二
for (Object key:keys) {
String value = (String) pets.get(key)
;
System.
out.println(key+
" "+value)
;
}
}
}
运行结果：
杰瑞 老鼠
旺旺 企鹅
欧欧 雪瑞娜
汤姆 猫
