java中Map和List初始化的两种方法

java

 1 //初始化List

2 List<string> list = new ArrayList</string><string>();

3 list.add("string1");

4 list.add("string2");

5 //some other list.add() code......

6 list.add("stringN");

7

8 //初始化Map

9 Map<string object=""> map = new HashMap<string object="">();

10 map.put("key1", "value1");

11 map.put("key2", "value2");

12 //.... some other map.put() code

13 map.put("keyN", "valueN");

14 </string></string></string>

 

 1 //初始化List

2 List<string> list = new ArrayList<string>(){{

3 add("string1");

4 add("string2");

5 //some other add() code......

6 add("stringN");

7 }};

8

9 //初始化Map

10 Map<string string=""> map = new HashMap<string object="">(){{

11 put("key1", "value1");

12 put("key2", "value2");

13 //.... some other put() code

14 put("keyN", "valueN");

15 }};

ArrayList<string> list = new ArrayList(Arrays.asList("Tom", "Jerry", "Mike"));

List list = new ArrayList<string>(){{

add("A");

add("B");

}}

 

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