map.forEach((key, value) -> { System.out.println("Key: " + key +", Value: " + value); }); }); 使用Java 8的Map.Entry流 javaList<Map<String,Object>> list =// 初始化你的List list.stream() .flatMap(map.entrySet().stream()) .forEach(entry ->System.out.println("Key: " +...
Map<String, Object> map1 = new HashMap<String, Object>(); map1.put("1", "a"); map1.put("2", "b"); map1.put("3", "c"); listMaps.add(map1); Map<String, Object> map2 = new HashMap<String, Object>(); map2.put("11", "aa"); map2.put("22", "bb"); map2.put...
使用for-each循环遍历List中的每一个Map元素: java for (Map<String, Object> map : list) { // 对每一个Map进行处理 } 对于每一个Map元素,使用for-each循环或迭代器遍历其所有的键值对: 使用for-each循环遍历Map: java for (Map<String, Object> map : list) { for (Map.Entry...
javaListMapString,Object遍历的⽅法public static void main(String[] args) { List<HashMap<String, Object>> list = new ArrayList<HashMap<String,Object>>();HashMap<String, Object> map = new HashMap<String, Object>();map.put("1", "a");map.put("2", "b");map.put("3", "c");l...
public class Question { public String question; public String answerA; public String answerB; public String answerC; public String answerD; public int answer; public String explaination; public int ID; public int selectedAnswer; } 我的实现: private static List<Map<String, Object>> list_data;...
lstp.add(map2);//第⼀种⽅式foreach遍历,先遍历listmap，然后再遍历map，通过key拿value System.out.println("***foreach遍历***");for(Map<String,Object> map : lstp){ for(String key : map.keySet()){ System.out.println(key+":"+map.get(key));} } //普通for循环；System.out.println...
for(Map<String,Object> map : list){ System.out.println("Map:")for(Map.Entry<String,Object> entry : map.entrySet()){ System.out.println(" "+entry.getKey()+":"+entry.getValue());} }
java中遍历list可以使用keyset来遍历，示例如下：Map<String,Object> map = new HashMap<String, String>(); map.put("1", "fds"); map.put("2", "valu"); List<Map<String, String>> list = new ArrayList<Map<String, String>>(); list.add(map); for (Map<String,...
public static void main(String[] args) { // 循环遍历List的4中方法 List strList = new ArrayList<>(); strList.add("aaa"); strList.add("bbb"); strList.add("ccc"); // 第一种: 普通for循环遍历方式 (好处是可以选择下标) for (int i = 0; i < strList.size(); i++) { ...
假设list是List<Map<String,String>> for (Map<String,String> m : list) { for (String key : m.keySet()) { System.out.println("Key = " + key); } //遍历map中的值 for String value : m.values()) { System.out.println("Value = " + value); } } 查看完整回答 反对 回复...