GirlFriendNotFoundException异常是怎样处理的？

/**
 * GirlFriendNotFoundException
 * 
 * @author LGL
 *
 */
class GirlFriendNotFoundException extends Exception {

	private String msg;

	public GirlFriendNotFoundException(String msg) {
		this.msg = msg;
	}

	@Override
	public String getMessage() {
		// TODO Auto-generated method stub
		return msg;
	}
}

这里只是重写了getMessage方法，反馈我们的异常信息，那我们来定义一个方法

class Demo {
	int dev(int age) throws GirlFriendNotFoundException {
		if (a < 18) {
			// 手动通过throw关键字抛出自定义异常对象
			throw new GirlFriendNotFoundException("Girl Friend Not Found !!!");
		}
		return age;
	}
}

/**
 * 自定义异常
 * 
 * @author LGL
 *
 */
public class CustomException {
	public static void main(String[] str) {
		Demo d = new Demo();
		try {
			d.dev(16);
		} catch (GirlFriendNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}