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java List Map遍歷的方法

public class Test {
    public static void main(String[] args) {

        List<Map<String, Object>> listMaps = new ArrayList<Map<String, Object>>();

        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("33", "cc"); listMaps.add(map2); for (Map<String, Object> map : listMaps) { for (String s : map.keySet
()) { System.out.print(map.get(s) + " "); } } System.out.println(); System.out.println("========================"); for (int i = 0; i < listMaps.size(); i++) { Map<String, Object> map = listMaps.get(i); Iterator iterator = map.keySet
().iterator(); while (iterator.hasNext()) { String string = (String) iterator.next(); System.out.println(map.get(string)); } } System.out.println("++++++++++++++++++++++++++++"); for (Map<String, Object> map : listMaps) { for (Map.Entry<String, Object> m : map.entrySet()) { System.out.print(m.getKey() + " "); System.out.println(m.getValue()); } } System.out.println("-----------------------------"); } } 列印的結果: c b a bb cc aa ======================== c b a bb cc aa ++++++++++++++++++++++++++++ c b a bb cc aa -----------------------------