exceptionexample3.java

Java程序设计实验与实训源代码经典的JAVA学习教材

class MyException1 extends Exception{
	MyException1(){
		System.out.println("我的第一个异常继承自Exception");
	}
}

class MyException2 extends MyException1{
	MyException2(){
		System.out.println("我的第二个异常继承自MyException1");
	}
}

class MyException3 extends MyException2{
	MyException3(){
		System.out.println("我的第三个异常继承自MyException2");
	}
}

class Class1{
	void f() throws MyException1{
		System.out.println("在Class1.f()中抛出第一个异常类的对象");
		throw new MyException1();
	}
}

class Class2 extends Class1{
	void f() throws MyException2{
		System.out.println("在Class2.f()中抛出第二个异常类的对象");
		throw new MyException2();
	}
}

class Class3 extends Class2{
	void f() throws MyException3{
		System.out.println("在Class3.f()中抛出第三个异常类的对象");
		throw new MyException3();
	}
}

class ExceptionExample3{
	public static void main(String[] args) {
		Class1 myClass1=new Class3();
		try{
			myClass1.f();
		}
		catch(MyException3 e3){
			System.out.println("捕捉到第三个异常");
		}
		catch(MyException1 e1){
			System.out.println("捕捉到第三个异常");
		}
	}
}