[Java] 纯文本查看 复制代码
import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;
//Map集合中包含5对元素: "邓超"->"孙俪", "李晨"->"范冰冰", "刘德华"->"柳岩",
//“黄晓明”->” Baby”, “谢霆锋”->”张柏芝”.使用keySet方式迭代出Map集合中的元素
public class Test04 {
public static void main(String[] args) {
HashMap<String, String> hashMap = new HashMap<>();
hashMap.put("邓超", "孙俪");
hashMap.put("李晨", "范冰冰");
hashMap.put("刘德华", "柳岩");
hashMap.put("黄晓明", "Baby");
hashMap.put("谢霆锋", "张柏芝");
Set<String> keySet = hashMap.keySet();
Iterator<String> it = keySet.iterator();
while (it.hasNext()) {
String key = it.next();
System.out.println(key+"="+hashMap.get(key));
}
System.out.println("==============");
for(String key : hashMap.keySet()) {
System.out.println(key+"="+hashMap.get(key));
}
}
}