myexception1.java

这个是JAVA程序基础书上第五章接口实现的代码

public class MyException1 extends Exception{
	public MyException1(){
		System.out.println("From MyException1() !");
	}
}
class MyException2 extends MyException1{
	public MyException2(){
		System.out.println("From MyException2() !");
	}
}
class MyException3 extends MyException1{
	public MyException3(){
		System.out.println("From MyException3() !");
	}
}
class MyException4 extends MyException2{
	public MyException4(){
		System.out.println("From MyException4() !");
	}
}