java如何遍历hashmap java如何遍历hashmap 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 map.entrySet().iterator();map.keys().iterator();map.values().iterator(); HashMap<K,V> map...for(V v:map) v.... for(Iterator iter = map.entrySet().iterator();iter.hasNext()){ Map.Entry element = (Map.Entry) iter.next(); Object strKey = element.getKey(); //键值 Object strValue = element.getValue(); //value值} public class Example8_2 { public static void main(String args[]) { Map<String, String>map=new HashMap<String, String>(); map.put("abc", "fan"); map.put("cde", "zhang"); Collection<String> c=map.values(); //第一种遍历 for(String str:c){ System.out.println(str); } //第二种遍历 Set<String>set=map.keySet(); for(String str:set){ System.out.println(map.get(str)); } }} HashMap map = new HashMap();map.put("1", "fgdgf");map.put("2", "fgdgf");````````Set entries = map.entrySet();Iterator iter = entries.iterator();while (iter.hasNext()) { Map.Entry entry = (Map.Entry) iter.next(); Object key = entry.getKey() Object value = entry.getValue(); System.out.println(key.toString()); System.out.println(value.toString());} list.add java 高手进....关于音乐频率 关于String s="a" + "b" 共创建了几个对象,自己的看法 有去培训机构培训的进来讨论下,顺便给下建议,非常感谢 java问题,高手进/,10分! 弱弱的问一句:在IE里面怎么得到Applet的实际大小 jbuilder做的串口通讯程序能否在linux下运行. java中如何释放控制权?? 怎么down j2sdk1.3的文档,只是可以看,但我不知如何down下来,谢谢!!! jdbc.properties里面url路径到底要这么写? 做过群发的或熟悉SMTP垃圾邮件处理的进来帮帮忙. 请教各位一个Random的用法
map.keys().iterator();
map.values().iterator();
for(V v:map)
v....
Map.Entry element = (Map.Entry) iter.next();
Object strKey = element.getKey(); //键值
Object strValue = element.getValue(); //value值
}
public static void main(String args[]) {
Map<String, String>map=new HashMap<String, String>();
map.put("abc", "fan");
map.put("cde", "zhang");
Collection<String> c=map.values();
//第一种遍历
for(String str:c){
System.out.println(str);
}
//第二种遍历
Set<String>set=map.keySet();
for(String str:set){
System.out.println(map.get(str));
}
}
}
map.put("1", "fgdgf");
map.put("2", "fgdgf");
````````
Set entries = map.entrySet();
Iterator iter = entries.iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
Object key = entry.getKey()
Object value = entry.getValue();
System.out.println(key.toString());
System.out.println(value.toString());}