检查，看看一个字符串是一个整数 - 的Java

问题描述

I have found several links related to my question, but they were not exactly what I was looking for. I would prefer to use a simple boolean than to learn to use the try/catch thing. Anyways, here is my question:

I want to set a boolean to true or false depending on if a string is an integer >= 10 and <= 100. So my objective is to set the boolean "answer":

String junk;
if (junk is an integer between 10 and 100){
return true;}
else{
return false;}

---

if junk = 50, its true.
if junk = fifty, its false.
if junk = 50:-p, its false.
if junk = 5, its false.
if junk = 500, its false.

Thanks!

解决方案

 static boolean isIntegerBetween10And100(String junk){
     try{
        int x = Integer.parseInt(junk);
        return x >= 10 && x <= 100;
     }
     catch(NumberFormatException e){
        return false;
     }
  }

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