填充字符串长度

 Java代码

1. public static void main(String[] args)
2. {
3. String str = "test";
4. System.out.println(str);
5. byte[] arr = new byte[str.length()*2];
6. for(int i = 0 ; i < arr.length ; i++)
7. {
8. arr[i] = 0x20;
9. }
10. byte[] strArr = str.getBytes();
11. System.arraycopy(strArr, 0, arr, 0, strArr.length);
12. String newStr = new String(arr);
13. System.out.println(newStr);
14. }  

转载于:https://blog.51cto.com/daheyuan/1133323