private boolean isGB2312(String str) ...{
char[] chars = str.toCharArray(); boolean isGB2312 = false;
for (int i = 0; i < chars.length; i++) ...{ byte[] bytes = ("" + chars[i]).getBytes(); if (bytes.length == 2) ...{ int[] ints = new int[2]; ints[0] = bytes[0] & 0xff; ints[1] = bytes[1] & 0xff; if (ints[0] >= 0x81 && ints[0] <= 0xFE && ints[1] >= 0x40 && ints[1] <= 0xFE) ...{ isGB2312 = true; break;
} } } return isGB2312;
}