Java 实例异常链

public class Main {
   public static void main (String args[])throws Exception {
      int n = 20, result = 0;

      try {
         result = n/0;
         System.out.println("The result is"+result);
      } catch(ArithmeticException ex) {
         System.out.println ("Arithmetic exception occoured: "+ex);

         try {
            throw new NumberFormatException();
         } catch(NumberFormatException ex1) {
            System.out.println ("Chained exception thrown manually : "+ex1);
         }
      }
   }
}