java 人工抛出异常

import java.util.Scanner;

public class Exceptions {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		B b=new B();
		int a;
		Scanner in = new Scanner(System.in);
		System.out.print("请输入年龄： ");
		a = in.nextInt();
		try {
			b.text(a);
		}catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			System.out.println(e.getMessage());
		}

	}

}
class B {
	public void text(int age) throws Exception{
		if(age>0)
			System.out.println(age);
		else
			throw new Exception("年龄在0-150之间");
	}
}

//请输入年龄： -1
java.lang.Exception: 年龄在0-150之间
年龄在0-150之间
    at B.text(Exceptions.java:28)
    at Exceptions.main(Exceptions.java:13)

Exception 异常的根父类

throws Exception 抛出异常