1.Iterator遍歷集合
public static void main(String[] args){
Map<String,String> map = new HashMap<String, String>();
map.put("土耳其","熱氣球");
map.put("中國","長城");
map.put("法國","鐵塔");
Set<String> keySet = map.keySet();
Iterator<String> it = keySet.iterator();
while (it.hasNext()){
String key = it.next();
String value = map.get(key);
System.out.println(key+"="+value);
}
}
輸出
土耳其=熱氣球
法國=鐵塔
中國=長城