public class ThrowException
{
static int chu(int a) throws ArithmeticException
{
     if(a==0)
     {
        ArithmeticException e=new ArithmeticException("除數不能為0");
        throw e;
     }
     return(100/a);
    }
public static void main( String args[] )
{
try
{
         System.out.println(chu(0));
      }
catch(ArithmeticException e)
{
System.out.println(e.getMessage());
}
}
}