用Java写一个程序：在键盘输入阿拉伯数字，将它转化为中文

好的，这个问题我可以回答。以下是Java代码示例：

import java.util.Scanner;

public class NumToChinese {

    private static final String[] CHINESE_NUMBERS = {"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};    
    private static final String[] CHINESE_UNITS = {"","拾","佰","仟","万","亿"};    
    
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int num = in.nextInt();
        System.out.println(convertToChinese(num));
    }
    
    private static String convertToChinese(int num) {
        if (num == 0) {
            return CHINESE_NUMBERS[0];
        }
        StringBuilder sb = new StringBuilder();
        if (num < 0) {
            sb.append("负");
            num = -num;
        }
        String numStr = String.valueOf(num);
        int length = numStr.length();
        boolean hasZero = false;
        for (int i = 0; i < length; i++) {
            int digit = numStr.charAt(i) - '0';
            int unitPos = length - 1 - i;
            if (digit == 0) {
                hasZero = true;
                if (unitPos == 4 || unitPos == 8) { 
                    sb.append(CHINESE_UNITS[unitPos]);
                    hasZero = false; 
                }
            } else {
                if (hasZero) {
                    sb.append(CHINESE_NUMBERS[0]);
                    hasZero = false;
                }
                sb.append(CHINESE_NUMBERS[digit]).append(CHINESE_UNITS[unitPos]);
            }
        }
        return sb.toString();
    }
}

这个程序可以将输入的阿拉伯数字转换为相应的中文数字。例如，输入12345，则输出"壹万贰仟叁佰肆拾伍"。