错误的异常被抛出(Wrong exception being thrown)

 我将字符串传递给此方法。 字符串是“44”。 然后我将它解析为一个int并执行if语句以查看它是否在1到12之间。然后转到我所拥有的else语句 - 抛出新的IllegalArgumentException（“非法月份数量：”+ inSetString）; 
 
 由于某种原因，这不会被抛出，它会下降到下一个异常并抛出一个 - 抛出新的IllegalArgumentException（“无效的月份名称字符串：”+ inSetString）; 
 
 为什么它抛出第二个异常语句而不是第一个异常语句？ 它会转到else语句。 我通过使用--System.out.println（“除了”+ inSetString）测试了它; 
 
 这是我的代码： 
 
 public void setMonthName(String inSetString)    
 {
         int i = 0;
         monthNumber = -1;

         try
         {
            System.out.println("first" + inSetString);
            i = Integer.parseInt(inSetString);
            System.out.println("next" + inSetString);
            if (i >= 1 && i <= 12)
            {
               monthNumber = i;
            }
            else
            {
                   System.out.println("except" + inSetString);
                throw new IllegalArgumentException("Illegal month number here: " + inSetString);
            }
         }
            catch (IllegalArgumentException e)
            {       

            }

      // if it gets to here we know it's a string
         for (int index = 0; index < monthNames.length; index++)
         {
            if (monthNames[index].equalsIgnoreCase(inSetString))
            {
               monthNumber = index;
            }
         }
         if (monthNumber == -1)
         {
            throw new IllegalArgumentException("Invalid month name string: " + inSetString);
         }
      }

I'm passing in a string to this method. The string is "44". I then parse it into an int and do an if statement to see if it's between 1 and 12. It then goes to the else statement where I have - throw new IllegalArgumentException("Illegal month number here: " + inSetString);
 
For some reason, that doesn't get thrown and it goes down to the next exception and that one is thrown - throw new IllegalArgumentException("Invalid month name string: " + inSetString);
 
Why does it throw the second exception statement but not the first? It DOES go to the else statement. I've tested that by using - System.out.println("except" + inSetString);
 
Here's my code:
 
 public void setMonthName(String inSetString)    
 {
         int i = 0;
         monthNumber = -1;

         try
         {
            System.out.println("first" + inSetString);
            i = Integer.parseInt(inSetString);
            System.out.println("next" + inSetString);
            if (i >= 1 && i <= 12)
            {
               monthNumber = i;
            }
            else
            {
                   System.out.println("except" + inSetString);
                throw new IllegalArgumentException("Illegal month number here: " + inSetString);
            }
         }
            catch (IllegalArgumentException e)
            {       

            }

      // if it gets to here we know it's a string
         for (int index = 0; index < monthNames.length; index++)
         {
            if (monthNames[index].equalsIgnoreCase(inSetString))
            {
               monthNumber = index;
            }
         }
         if (monthNumber == -1)
         {
            throw new IllegalArgumentException("Invalid month name string: " + inSetString);
         }
      }

原文：https://stackoverflow.com/questions/9355476