反序输出

public class NumberInverse {
    private int amount;
    private String stringOutput;
    private int inverseInt;
    public NumberInverse(int input){
        if(input>99999||input < -99999)
        {
            System.out.println("请输入一个小于五位的整数");
            return;
        }
        //位数
        amount = Integer.toString(Math.abs(input)).length();
        //空格显示
        for(char c : Integer.toString(Math.abs(input)).toCharArray())
            {
                if(stringOutput == null)
                {
                    stringOutput = "";
                }
                stringOutput += String.format("%s%s",String.valueOf(c)," ");
                
            }
            stringOutput = input>=0? stringOutput:String.format("-%s",stringOutput);
        //逆序
        String s = "";
        for(int i = this.getAmount()-1;i>=0;i--)
        {
            s += String.valueOf((Integer.toString(Math.abs(input)).toCharArray())[i]);
        }
        inverseInt = input>=0?Integer.parseInt(s):Integer.parseInt(String.format("-%s",s));
        
        
    }
    public int getAmount()
    {
        return amount;
    }
    public String getStringOutput()
    {
        return stringOutput;
    }
    public int getInverseInt()
    {
        return inverseInt;
    }
        

    public static void main(String[] args) {
        NumberInverse n = new NumberInverse(-32345);
        System.out.println(n.getAmount());// 打印位数
        System.out.println(n.getStringOutput());
        System.out.println(n.getInverseInt());// 打印逆序的数字
    }
}