throw和throws的使用

public class Person {private String name;private int age;public Person(){}Person(String name,int age){this.name = name;this.age = age;}public int getAge() {return age;}public String getName() {return name;}public void setName(String name) {this.name = name;}public void setAge(int age) throws Exception{if (age<1||age>120){throw new Exception("年龄错误，必须在1-120岁之间:"+age);}else {this.age = age;}}@Overridepublic String toString() {return "Person{name="+name+",age"+age+"}";}public static void main(String[] args) {Person person = new Person();person.setName("张三");try {person.setAge(340);}catch (Exception e){e.printStackTrace();}System.out.println(person);}
}