DemoException

package DemoException;

/**
 * 对异常的捕捉与处理
 */
class MyException extends Exception{
    private int i;
    public MyException(){};
    public MyException(String msg){
        super(msg);
    }
    public MyException(String msg,int x){
        super(msg);
        i = x;
    }
    public int val(){
        return i;
    }
}
public class DemoException {
    public static void a() throws MyException{
        System.out.println("a()throw");
        throw new MyException();
    }
    public static void b() throws MyException{
        System.out.println("b()throw");
        throw new MyException("b()`s exception");
    }
    public static void c() throws MyException{
        System.out.println("c()throw");
        throw new MyException("c`s exception",01);
    }

    public static void main(String[] args) {
        try {
            a();
        }catch (MyException e){
            System.out.println(e.getMessage());
            System.out.println(e.toString());
        }
        try {
            b();
        }catch (MyException e){
            System.out.println(e.getMessage());
            System.out.println(e.toString());
        }
        try {
            c();
        }catch (MyException e){
            System.out.println(e.getMessage());
            System.out.println(e.toString());
            System.out.println("errorcode:"+e.val());
        }
    }
}