byte array to string conversion

Thu Sep 11 21:26:00 GMT 2003

Tom Tromey wrote:
>>>>>>"Lars" == Lars Andersen <lars@rimfaxe.com> writes:
>>>>>>>>>>>>>>Lars> Just tried it with the latest 3.4 snapshot. Same thing.
>>I suspect your system's iconv(), or your locale setting, or both.
>>Try debugging the program with gdb. My theory is that the early
>`test_str.getBytes()' call is returning bad results.
>>Tom
>>
I modified the example a bit.
This one works for both Sun jdk and GCJ.
Substitute "iso-8859-1" with "UTF-8" and only Sun jdk works (at least 
for me)
 >>>>>>>>>>>>>>>>>>>>
public class TestStringConversion
{
 private static final int BYTE_RANGE = (1 + Byte.MAX_VALUE) - 
Byte.MIN_VALUE;
 private static byte[] allBytes = new byte[BYTE_RANGE];
 private static char[] byteToChars = new char[BYTE_RANGE];
 static
 {
 
 for (int i = Byte.MIN_VALUE; i <= Byte.MAX_VALUE; i++)
 {
 allBytes[i - Byte.MIN_VALUE] = (byte) i;
 }
 
 String allBytesString = "";
 try
 {
 allBytesString = new String(allBytes,0,Byte.MAX_VALUE - 
Byte.MIN_VALUE,"iso-8859-1");
 }
 catch (Exception e)
 { }
 
 int allBytesStringLen = allBytesString.length();
 for (int i = 0; (i < (Byte.MAX_VALUE - Byte.MIN_VALUE)) && (i < 
allBytesStringLen); i++)
 {
 byteToChars[i] = allBytesString.charAt(i);
 }
 }
 
 public TestStringConversion()
 {
 }
 
 /**
 * String conversion as found in com.mysql.jdbc.StringUtils
 */
 public static String toAsciiString(byte[] buffer, int startPos, int 
length)
 {
 char[] charArray = new char[length];
 int readpoint = startPos;
 for (int i = 0; i < length; i++)
 {
 charArray[i] = byteToChars[(int) buffer[readpoint] - 
Byte.MIN_VALUE];
 readpoint++;
 } 
 return new String(charArray);
 }
 
 public static void main(String[] args)
 { 
 
 String test_str = "Test String"; 
 byte[] test_buf = test_str.getBytes();
 System.out.println("toAsciiString -> "+toAsciiString(test_buf, 0, 
test_buf.length));
 }
 
}
<<<<<<<<<<<<<<<<<<<<
/Lars Andersen