java实现阿拉伯数字转汉字数字

package bin;/** * @author Elsa * @param args * @param 2013-1-21 */public class DoubleTest {  static String[] units = { "", "十", "百", "千", "万", "十万", "百万", "千万", "亿",      "十亿", "百亿", "千亿", "万亿" };  static char[] numArray = { '零', '一', '二', '三', '四', '五', '六', '七', '八', '九' };  /**   * 测试   * @param args   */  public static void main(String[] args) {    int num = 234234324;    String numStr = foematInteger(num);    System.out.println("num= " + num + ", convert result: " + numStr);    double decimal = 12312;    System.out        .println("============================================================");    String decStr = formatDecimal(decimal);    System.out.println("decimal= " + decimal + ", decStr: " + decStr);  }  private static String foematInteger(int num) {    char[] val = String.valueOf(num).toCharArray();    int len = val.length;    StringBuilder sb = new StringBuilder();    for (int i = 0; i < len; i++) {      String m = val[i] + "";      int n = Integer.valueOf(m);      boolean isZero = n == 0;      String unit = units[(len - 1) - i];      if (isZero) {        if ('0' == val[i - 1]) {          continue;        } else {          sb.append(numArray[n]);        }      } else {        sb.append(numArray[n]);        sb.append(unit);      }    }    return sb.toString();  }  /**   * 对于double类型的的装换   *    * @param decimal   * @return   */  private static String formatDecimal(double decimal) {    String decimals = String.valueOf(decimal);    int decIndex = decimals.indexOf(".");    int integ = Integer.valueOf(decimals.substring(0, decIndex));    int dec = Integer.valueOf(decimals.substring(decIndex + 1));    String result = foematInteger(integ) + "." + formatFractionalPart(dec);    return result;  }  /**   * 对整数类型的转换   *    * @param decimal   * @return   */  private static String formatFractionalPart(int decimal) {    char[] val = String.valueOf(decimal).toCharArray();    int len = val.length;    StringBuilder sb = new StringBuilder();    for (int i = 0; i < len; i++) {      int n = Integer.valueOf(val[i] + "");      sb.append(numArray[n]);    }    return sb.toString();  }}