import java.util.Scanner; public class CheckIntChar { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("Enter input value : "); String str = sc.next(); System.out.
Linux 命令面试题(共 5k 字) Git 命令面试题(共 1k 字) #扩充面试篇👇 吊打面试官(涵盖消息队列、系统设计、场景题等) 期待看完这套近 30 万字的面试题的同学,都是大厂 offer 收割机! 对了,最新的互联网大厂后端面经都会在公众号首发,别忘记关注哦!!如果你想加入百人技术交流群,扫码下方二维码回复「加群...
Stream(5.0 版新增):消息队列,相比于基于 List 类型实现的消息队列,有这两个特有的特性:自动生成全局唯一消息ID,支持以消费组形式消费数据。# 热key 是什么?怎么解决?Redis热key是指被频繁访问的key,可能会导致单个key的访问量过大,影响系统性能。解决方法包括:开启...
Crack your next tech interview with these top Java coding interview questions. Covers core Java, OOP, data structures, and real coding examples
Java Interview Questions Part 7 What are the functions of the JDBC Connection interface? TheConnection interfacemaintains a session with the database. It can be used for transaction management. It provides factory methods that return the instance of Statement, PreparedStatement, CallableStatement, and ...
public class ArrayList<E> extends AbstractList<E> implements List<E>, RandomAccess, Cloneable, java.io.Serializable { /** * 列表元素集合数组如果新建ArrayList对象时没有指定大小,那么会将 * EMPTY_ELEMENTDATA赋值给elementData, * 并在第一次添加元素时,将列表容量设置为DEFAULT_CAPACITY */ transient ...
Java Collections Interview Questions and Answers What are Collection related features in Java 8? Java 8 has brought major changes in the Collection API. Some of the changes are: Java Stream API for collection classes for supporting sequential as well as parallel processing Iterable interface is ...
非法请求的限制:当有大量恶意请求访问不存在的数据的时候,也会发生缓存穿透,因此在 API 入口处我们要判断求请求参数是否合理,请求参数是否含有非法值、请求字段是否存在,如果判断出是恶意请求就直接返回错误,避免进一步访问缓存和数据库。 缓存空值或者默认值:当我们线上业务发现缓存穿透的现象时,可以针对查询的数据,在...
Here are some Java OOPs Interview Questions to crack coding interviews. Functions and Methods OOPs Interview Questions on Java Go through these Object-Oriented Programming interview questions on Functions and Methods to nail your tech interview on Java OOPs concepts. What is constructor overloading in...
interview/ 面试题地址：https://xiaolincoding.com/interview/ https://xiaolincoding.com ...