exceptiondemo.java

清华大学第二版

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

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

class ExceptionDemo {
	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("Exception caught" + e);
		}
	}
}