在日常生活中，我们经常会将阿拉伯数字转化为中文大写的情况："零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖", "拾", "佰", "仟", "万", "亿"，因此自己就编写一个类，实现该功能的转化。
实现过程：
对于这个问题的实现，我们首先把数字按四位一个拆开（符合我们读数字的习惯），然后对这四位数，做出他的读法，具体代码如下：

private static String getNumberStr1000 (int num) {  if (num > 9999 || num < 0) {   return "";  }  int q = num / 1000;  int b = (num / 100) % 10;  int s = (num / 10) % 10;  int g = num % 10;  StringBuffer sb = new StringBuffer();  //千  if (q > 0) {   sb.append(NUMBER1[q]);   sb.append(NUMBER2[3]);  }  //百  if (b > 0) {   sb.append(NUMBER1[b]);   sb.append(NUMBER2[2]);  } else {   if (q != 0) {    sb.append(NUMBER2[0]);   }  }  //十  if (s > 0) {   sb.append(NUMBER1[s]);   sb.append(NUMBER2[1]);  } else {   if (b != 0) {    sb.append(NUMBER2[0]);   }  }  //个  if (g > 0) {   sb.append(NUMBER1[g]);  }  return sb.toString(); } 

下面我们只需要在编写一个方法，实现每个四位数的读法以及对应的单位即可，具体代码如下：

public static String getNumberStr(int num) {  if (num < 0) {   return "";  }  if (num == 0) {   return NUMBER1[0];  }  int split = 10000;  int y = num / (split * split);  int w = (num / split) % split;  int g = num % split;  StringBuffer sb = new StringBuffer();  //亿  if (y > 0) {   sb.append(getNumberStr1000(y));   sb.append(NUMBER2[5]);  }  //万  if (w > 999) {   sb.append(getNumberStr1000(w));   sb.append(NUMBER2[4]);  } else {   if (w > 0) {    if (y != 0) {     sb.append(NUMBER2[0]);    }    sb.append(getNumberStr1000(w));    sb.append(NUMBER2[4]);   }  }  //万以下  if (g > 0) {   if (w != 0) {    if (g > 999) {     sb.append(getNumberStr1000(g));    } else {     sb.append(NUMBER2[0]);     sb.append(getNumberStr1000(g));    }       } else {    if (y != 0) {     sb.append(NUMBER2[0]);    }    sb.append(getNumberStr1000(g));   }  }  return sb.toString(); } 

完整源代码：

 /**  *@Description:   */ package com.lulei.util;  public class NumberUtil {  private static String[] NUMBER1 = {"零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"};  private static String[] NUMBER2 = {"零", "拾", "佰", "仟", "万", "亿"};    /**   * @param num   * @return   * @Author:lulei   * @Description:将数字转化为大写   */  public static String getNumberStr(int num) {   if (num < 0) {    return "";   }   if (num == 0) {    return NUMBER1[0];   }   int split = 10000;   int y = num / (split * split);   int w = (num / split) % split;   int g = num % split;   StringBuffer sb = new StringBuffer();   //亿   if (y > 0) {    sb.append(getNumberStr1000(y));    sb.append(NUMBER2[5]);   }   //万   if (w > 999) {    sb.append(getNumberStr1000(w));    sb.append(NUMBER2[4]);   } else {    if (w > 0) {     if (y != 0) {      sb.append(NUMBER2[0]);     }     sb.append(getNumberStr1000(w));     sb.append(NUMBER2[4]);    }   }   //万以下   if (g > 0) {    if (w != 0) {     if (g > 999) {      sb.append(getNumberStr1000(g));     } else {      sb.append(NUMBER2[0]);      sb.append(getNumberStr1000(g));     }         } else {     if (y != 0) {      sb.append(NUMBER2[0]);     }     sb.append(getNumberStr1000(g));    }   }   return sb.toString();  }    /**   * @param num   * @return   * @Description:对万以下的数字进行大小写转化   */  private static String getNumberStr1000 (int num) {   if (num > 9999 || num < 0) {    return "";   }   int q = num / 1000;   int b = (num / 100) % 10;   int s = (num / 10) % 10;   int g = num % 10;   StringBuffer sb = new StringBuffer();   //千   if (q > 0) {    sb.append(NUMBER1[q]);    sb.append(NUMBER2[3]);   }   //百   if (b > 0) {    sb.append(NUMBER1[b]);    sb.append(NUMBER2[2]);   } else {    if (q != 0) {     sb.append(NUMBER2[0]);    }   }   //十   if (s > 0) {    sb.append(NUMBER1[s]);    sb.append(NUMBER2[1]);   } else {    if (b != 0) {     sb.append(NUMBER2[0]);    }   }   //个   if (g > 0) {    sb.append(NUMBER1[g]);   }   return sb.toString();  }   public static void main(String[] args) {   // TODO Auto-generated method stub   int i = 1;   System.out.println(i + "--" + NumberUtil.getNumberStr(i));   i = 1001;   System.out.println(i + "--" + NumberUtil.getNumberStr(i));   i = 100101;   System.out.println(i + "--" + NumberUtil.getNumberStr(i));   i = 10100101;   System.out.println(i + "--" + NumberUtil.getNumberStr(i));   i = 1234567890;   System.out.println(i + "--" + NumberUtil.getNumberStr(i));  }  }

 测试运行结果：

希望本文所述对大家学习java程序设计有所帮助。