您输入的不是有效年龄，请重新输入

import java.util.Scanner;

public class Demo {

public static void main(String[] args) {
    Scanner sc= new Scanner(System.in);
    boolean flag = true;
    while (flag) {
        try {
            System.out.println("请输入姓名：");
            String name = sc.nextLine();
            System.out.println("请输入年龄：");
            int age = Integer.parseInt(sc.nextLine());
            System.out.println("个人信息录入成功！请核对：\n姓名：" + name + "\t年龄：" + age );
            flag = false;
        } catch (NumberFormatException e) {
            e.printStackTrace();
            System.err.println("您输入的不是有效年龄，请重新输入");
        }finally {
            sc.reset();
        }
    }
}

}