Map<String, String> map = new HashMap<String, String>();<\/p>\n\n\n\n
map.put(“1”, “value1”);<\/p>\n\n\n\n
map.put(“2”, “value2”);<\/p>\n\n\n\n
map.put(“3”, “value3”);<\/p>\n\n\n\n\n\n\n\n
\/\/\u7b2c\u4e00\u79cd\uff1a\u666e\u904d\u4f7f\u7528\uff0c\u4e8c\u6b21\u53d6\u503c<\/p>\n\n\n\n
System.out.println(“\u901a\u8fc7Map.keySet\u904d\u5386key\u548cvalue\uff1a”);<\/p>\n\n\n\n
for (String key : map.keySet()) {<\/p>\n\n\n\n
System.out.println(“key= “+ key + ” and value= ” + map.get(key));<\/p>\n\n\n\n
}<\/p>\n\n\n\n
\/\/\u7b2c\u4e8c\u79cd<\/p>\n\n\n\n
System.out.println(“\u901a\u8fc7Map.entrySet\u4f7f\u7528iterator\u904d\u5386key\u548cvalue\uff1a”);<\/p>\n\n\n\n
Iterator<Map.Entry<String, String>> it = map.entrySet().iterator();<\/p>\n\n\n\n
while (it.hasNext()) {<\/p>\n\n\n\n
Map.Entry<String, String> entry = it.next();<\/p>\n\n\n\n
System.out.println(“key= ” + entry.getKey() + ” and value= ” + entry.getValue());<\/p>\n\n\n\n
}<\/p>\n\n\n\n
\/\/\u7b2c\u4e09\u79cd\uff1a\u63a8\u8350\uff0c\u5c24\u5176\u662f\u5bb9\u91cf\u5927\u65f6<\/p>\n\n\n\n
System.out.println(“\u901a\u8fc7Map.entrySet\u904d\u5386key\u548cvalue”);<\/p>\n\n\n\n
for (Map.Entry<String, String> entry : map.entrySet()) {<\/p>\n\n\n\n
System.out.println(“key= ” + entry.getKey() + ” and value= ” + entry.getValue());<\/p>\n\n\n\n
}<\/p>\n\n\n\n
\/\/\u7b2c\u56db\u79cd<\/p>\n\n\n\n
System.out.println(“\u901a\u8fc7Map.values()\u904d\u5386\u6240\u6709\u7684value\uff0c\u4f46\u4e0d\u80fd\u904d\u5386key”);<\/p>\n\n\n\n
for (String v : map.values()) {<\/p>\n\n\n\n
System.out.println(“value= ” + v);<\/p>\n\n\n\n
}<\/p>\n\n\n\n
}<\/p>\n","protected":false},"excerpt":{"rendered":"
Map<String, String> map = new HashMap<String, … <\/p>\n