10.17 Java异常处理1

 eg:

import javax.swing.*;

class AboutException {
   public static void main(String[] a) 
   {
      int i=1, j=0, k;
      k=i/j;


    try
    {
       
       k = i/j;    // Causes division-by-zero exception
       //throw new Exception("Hello.Exception!");
    }
    
    catch ( ArithmeticException e)
    {
       System.out.println("��0��.  "+ e.getMessage());
    }
    
    catch (Exception e)
    {
       if (e instanceof ArithmeticException)
          System.out.println("��0��");
       else
       {  
          System.out.println(e.getMessage());
          
       }
    }

    
    finally
     {
           JOptionPane.showConfirmDialog(null,"OK");
     }
       
  }
}
此代码一开始的错误就是出现了除0，之后需要try来判断即可