When I read a negative value or a value greater than 128 it doesn.t print anthing...it is supposed to print : ""This is an Integer. Value: " + value": I really cant understand why is not printing that message when I call it..Can anyone help me, please!! 
package com.codegym.task.task15.task1519;

import com.sun.xml.internal.ws.util.StringUtils;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

/*
Different methods for different types

*/

public class Solution {

    public static void main(String[] args) throws IOException {
        //write your code here
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String s;
        Short sh;
        Integer inte;

        while (true){
            s = reader.readLine();
            if(s.equals("exit")) break;
            Double dou ;
            if(isDouble(s) && s.contains(".")) {
                 dou = Double.parseDouble(s);
                print(dou);
            }

            else if(isShort(s) ){
                 sh = Short.parseShort(s);
                if(sh > 0 && sh < 128)
                print(sh);
            }

             else if (isInteger(s) ) {
                inte = Integer.parseInt(s);
                if (inte <= 0 )
                    print(inte);
                if(inte >= 128)
                    print(inte);
            }
            else {
                print(s);
            }

        }

    }
    public static boolean isInteger(String in){
        try{
            Integer.parseInt(in);
            return true;
        }
        catch(Exception e){
            return false;
        }
    }
    public static boolean isDouble(String in){
        try{
            Double.parseDouble(in);
            return true;
        }
        catch(Exception e){
            return false;
        }
    }
    public static boolean isShort(String in){
        try{
            Short.parseShort(in);
            return true;
        }
        catch(Exception e){
            return false;
        }
    }


    public static void print(Double value) {
        System.out.println("This is a Double. Value: " + value);
    }

    public static void print(String value) {
        System.out.println("This is a String. Value: " + value);
    }

    public static void print(short value) {
        System.out.println("This is a short. Value: " + value);
    }

    public static void print(Integer value) {
        System.out.println("This is an Integer. Value: " + value);
    }
}