| package StringBuilder_package; | |
| public class case2_Splice_string { | |
| public static void main(String[] args) { | |
| //1、定义数组 | |
| int[] arr = {1, 2, 3}; | |
| //2、调用方法把数组变成字符串 | |
| String str = arrToString(arr); | |
| System.out.println(str); | |
| } | |
| public static String arrToString(int[] arr) { | |
| StringBuilder sb = new StringBuilder(); | |
| sb.append("["); | |
| for (int i = 0; i < arr.length; i++) { | |
| if (i == arr.length - 1) { | |
| sb.append(arr[i]); | |
| } else { | |
| sb.append(arr[i] + ", "); | |
| } | |
| } | |
| sb.append("]"); | |
| return sb.toString(); | |
| } | |
| } | |