方法一：遍历条目entries （键值都用到时）
Map<String, String> map = new HashMap<String, String>();
for (Map.Entry<String, String>entry : map.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
}
方法二：单独遍历key或value （只使用key或value时）
Map<String, String> map = new HashMap<String, String>();
//遍历map中的键
for (String key : map.keySet()) {
System.out.println("Key = " + key);
}
//遍历map中的值
for (String value : map.values()) {
System.out.println("Value = " + value);
}
方法三：使用Iterator遍历
Map<String, String> map = new HashMap<String, String>();
Iterator<Map.Entry<String, String>> entries = map.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry<String, String> entry = entries.next();
System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());
}
标签：Map,遍历,map,对象,value,key,entry From： https://www.cnblogs.com/lxpblogs/p/16602105.html