数据类型转换

   char c= '8';
        //char cc= '0';
        int i = c-'^';
        int j=  c+'0';
        char ch = '9';
        int in = '\0';
        System.out.println(i);
        //*System.out.println(i);

        //1.
    int a=5;
        String s = String.valueOf(a);
        System.out.println(s);

        //3.
        double d=15.2551;
        BigDecimal b = new BigDecimal(d);
        BigDecimal big = b.setScale(2, RoundingMode.HALF_UP);
        System.out.println(big);

        String s1 = big.toString();
        String s2 = s1.substring(s1.length() - 2);
        System.out.println(s2);