Java中是否可在Catch中使用try catch呢？

Java catch内catch的示例分享

例:

public class testClass{
   public static void main (String args[])throws Exception  {
      int x=8,r=0;
      try{
         r=x/0;
         System.out.println("r:"+r);
      }
      catch(ArithmeticException ex){
         System.out.println("算术异常:"+ex);
         try {
               throw new NumberFormatException();
         }
         catch(NumberFormatException ex1) {
            System.out.println("再次抛出异常测试:"+ex1);
         }
      }
   }
}

算术异常:java.lang.ArithmeticException: / by zero
再次抛出异常测试:java.lang.NumberFormatException