异常笔记

package myPro1;

public class Person {
	private int age;

	//throws的作用，让调用setAge的处理异常
	public void setAge(int age) throws Exception {
		if (age < 0) {
			Exception e = new Exception();
			throw e;//如果年龄小于0，抛出异常
		}
		this.age = age;
	}
}


package myPro1;

public class TestMain {
	public static void main(String[] args) {
		Person person=new Person();
		try {
			person.setAge(-11);
		} catch (Exception e) {
			System.out.println("年龄不能设为负数");
		}
	}
}