在Java中,可以使用以下几种方法来遍历HashMap:
HashMap<String, Integer> map = new HashMap<>(); map.put("A", 1); map.put("B", 2); for (Map.Entry<String, Integer> entry : map.entrySet()) { System.out.println("Key: " + entry.getKey() + ", Value: " + entry.getValue()); } HashMap<String, Integer> map = new HashMap<>(); map.put("A", 1); map.put("B", 2); for (String key : map.keySet()) { System.out.println("Key: " + key + ", Value: " + map.get(key)); } HashMap<String, Integer> map = new HashMap<>(); map.put("A", 1); map.put("B", 2); for (Integer value : map.values()) { System.out.println("Value: " + value); }