本帖最后由 love60477002 于 2015-11-18 10:48 编辑
0. 声明一个数组(Declare an array) 1 2 3 | String[] aArray = new String[5]; String[] bArray = {"a","b","c", "d", "e"}; String[] cArray = new String[]{"a","b","c","d","e"}; |
1. 在Java中输出一个数组(Print an array in Java) 1 2 3 4 5 6 7 8 9 | int[] intArray = { 1, 2, 3, 4, 5 }; String intArrayString = Arrays.toString(intArray); // print directly will print reference value System.out.println(intArray); // [I@7150bd4d System.out.println(intArrayString); // [1, 2, 3, 4, 5] |
2. 从数组中创建数组列表(Create an ArrayListfrom an array) String[] stringArray = { "a", "b", "c", "d", "e" }; ArrayList<String> arrayList = new ArrayList<String>(Arrays.asList(stringArray));
System.out.println(arrayList);
3. 检查数组中是否包含特定值(Check if an array contains a certain value)
String[] stringArray = { "a", "b", "c", "d", "e" }; boolean b = Arrays.asList(stringArray).contains("a"); System.out.println(b); //true
4. 连接两个数组( Concatenate two arrays)
int[] intArray = { 1, 2, 3, 4, 5 }; int[] intArray2 = { 6, 7, 8, 9, 10 }; // Apache Commons Lang library int[]combinedIntArray = ArrayUtils.addAll(intArray, intArray2);
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