myexceptiondemo.java

Java面向对象编程(随书配套源代码) 阐述了面向对象编程的思想

package chapter9;

class MyException extends Exception
{
    private int detail;
    MyException(int a)
    {
        detail = a;
    }

    public String toString()
    {
        return "MyException[" + detail + "]";
    }
}

public class MyExceptionDemo
{
    static void compute(int a) throws MyException
    {
        System.out.println("Called compute(" + a + ")");
        if(a > 10)
            throw new MyException(a);
        System.out.println("Normal exit");
    }

    public static void main(String args[])
    {
        try
        {
            compute(1);
            compute(20);
        }
        catch (MyException e)
        {
            System.out.println("Caught " + e);
        }
    }
}