假设类型TreeMap
for(Map.Entry<String,Integer> entry : treeMap.entrySet()) { String key = entry.getKey(); Integer value = entry.getValue(); System.out.println(key + " => " + value);}(键和值类型当然可以是任何类)

假设类型TreeMap
for(Map.Entry<String,Integer> entry : treeMap.entrySet()) { String key = entry.getKey(); Integer value = entry.getValue(); System.out.println(key + " => " + value);}(键和值类型当然可以是任何类)