integer.toString(int i, int radix)

来自java.lang，int 类型转字符串类型。

public class IntegerTest {
  //
  public static String toStrNum(int i, int radix) {
     char[] digits = {
              '0' , '1' , '2' , '3' , '4' , '5' ,
              '6' , '7' , '8' , '9' , 'a' , 'b' ,
              'c' , 'd' , 'e' , 'f' , 'g' , 'h' ,
              'i' , 'j' , 'k' , 'l' , 'm' , 'n' ,
              'o' , 'p' , 'q' , 'r' , 's' , 't' ,
              'u' , 'v' , 'w' , 'x' , 'y' , 'z'
                };
      if (radix < Character.MIN_RADIX || radix > Character.MAX_RADIX)
      radix = 10;

    /* Use the faster version */
    if (radix == 10) {
        return toString(i);
    }

    char buf[] = new char[33];
    boolean negative = (i < 0);
    int charPos = 32;

    if (!negative) {
      i = -i;
    }
    while (i <= -radix) {
      buf[charPos--] = digits[-(i % radix)];
      i = i / radix;
    }
    buf[charPos] = digits[-i];


    if (negative) {
      buf[--charPos] = '-';
    }

    return new String(buf, charPos, (33 - charPos));
    }


  public static void main(String[] args) {

    String xteString  = toStrNum(8, 2);
    System.out.println(xteString);
  }
}