public class TestCount
{

    /**
     * @param args
     */
    public static void main(String[] args)
    {
        String str = "12455547464515475354635";

        int[] x = new int[10];
        char[] ca = str.toCharArray();
        for (int i = 0; i < ca.length; i++)
        {
            x[ca[i] - '0']++;
        }

        for (int i = 0; i < x.length; i++)
        {
            System.out.println("字符" + (char) ('0' + i) + "出现了" + x[i] + "次");
        }

    }