处理了一个以前写的java小程序的异常

之前用java做过0-99的数字和英文之间的翻译，输入数字就会翻译成英文，输入英文会翻译成数字，比如输入56  输出fiftysix   输入fiftysix  输出56，

发现这会有一个异常，当输入不符合格式时，比如英文和数字混输，或者输入标点会报NumberFormatException异常，现在捕捉了这个异常，顺便把

输入越界也加入了异常，比如输入100时 报"输入越界！"。

以下附上代码：

package TranslateClass;
import java.util.Scanner;

abstract class inter
{
 String x[]={"zero","one","two","three","four","five","six","seven","eight","nine"};
 String y[]={"ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen"};
 String z[]={"twenty","thirty","fourty","fifty","sixty","seventy","eighty","ninety"};
 abstract void Translate()throws OutException;
}
class OutException extends Exception
{
 OutException(String msg)
 {
  super(msg);
 }
}

class TransEnglish extends inter//数字翻译成英文
{
 int a;
 
 TransEnglish(int a)
 {
  this.a=a;
 }
 public void Translate()throws OutException
 {
  if(a>=0&&a<=9)
   System.out.println(a+" 翻译成英文为：\n"+x[a]);
  else if(a>9&&a<=19)
   System.out.println(a+" 翻译成英文为：\n"+y[a%10]);
  else if(a>19&&a<=99)
   System.out.println(a+" 翻译成英文为：\n"+z[a/10-2]+"-"+x[a%10]);
  else
   throw new OutException("输入的数字"+a+"不在0-99之间！");
   
 }

}
class TransCout extends inter//英文翻译成数字
{
 String a;
 int i;
 int j=0;
 TransCout(String a)
 {
  this.a=a;
 }
 public void Translate()throws OutException
 {
 
  
  
  for(i=0;i<=7;i++)
  { 
   if(a.contains(z[i]))
    j=(i+2)*10;
   if(a==z[i])
   {
    System.out.println(a+" 翻译成数字为\n"+(i+2)*10);
    return;
   }
  }
  for(i=0;i<=9;i++)
  { 
   if(a==y[i])
   {
    System.out.println(a+" 翻译成数字为\n"+i+10);
    return;
   }
   else if(a.contains(x[i]))
   {
    System.out.println(a+" 翻译成数字为\n"+(j+i));
    return;
   }
  }
  throw new OutException("输入的英文"+a+"不在zero 到 ninety-nie之间！");
 }
}
class Translate
{
  private Translate(){}
  private static Translate s= new Translate();
  public static Translate getTranslate()
  {
   return s;
  }
  
 public void Trans()
 {
  System.out.print("请输入你想翻译的数字或英文（仅限0-99）：");
  Scanner scanf=new Scanner(System.in);
  try//解决输入格式异常
  {
   String Str=scanf.next();
   if(Str.charAt(0)>=48&&Str.charAt(0)<=57)
   {
    int cot=Integer.parseInt(Str);
    new TransEnglish(cot).Translate();
   }
   else
    new TransCout(Str).Translate();
  
  }
  catch(NumberFormatException e)
  {
   System.out.println("输入错误！");
   System.out.println(e.toString());      
   
  }
  catch(OutException o)
  {
   System.out.println("输入越界！");
   System.out.println(o.toString());
  }
  finally
  {
   System.out.println("翻译结束。");//断开服务器连接
  }
  
 }
 public static void main(String[] args)
 {
  Translate T = Translate.getTranslate();
  T.Trans();
  //new Translate().Trans();
 }
}