Crack your next tech interview with these top Java coding interview questions. Covers core Java, OOP, data structures, and real coding examples
public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("Enter input value : "); String str = sc.next(); System.out.println(checkData(str)); } public static String checkData(String str) { String s1 = ""; String s2 = ""; for (int i ...
第三步:找到不一样的球 第三次称重:根据上一步的结果,可以从两个候选球中选择一个进行称重。比如: 假如上一步得知A和B中有一个球不一样,再称重一次A和B,这样可以确定出哪个是不同的球。 因此,通过这三个称重的步骤,最多只需要3 次称重就可以找出7个球中那个不一样的球。
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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...
Waiting/Blocked:In this state, a thread is not running but still alive, or it is waiting for the other thread to finish. Dead/Terminated:A thread is in terminated or dead state when the run() method exits. Differentiate between the Thread class and Runnable interface for creating a Thread...
常见的限流算法有四种:固定窗口限流算法、滑动窗口限流算法、漏桶限流算法和令牌桶限流算法。 固定窗口限流算法实现简单,容易理解,但是流量曲线可能不够平滑,有“突刺现象”,在窗口切换时可能会产生两倍于阈值流量的请求。 滑动窗口限流算法是对固定窗口限流算法的改进,有效解决了窗口切换时可能会产生两倍于阈值流量请求的...
We’ve brought together a team of highly skilled Java experts to create a set of ready-made Java programming questions you can use in your interview process.These Java interview questions have everything you need for a face-to-face interview with prospective developers: possible right and wrong...
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 ...
In this article, we’ll look at some common interview questions on Java OOPS concepts asked in technical interviews. If you’re a software engineer, coding engineer, software developer, engineering manager, or tech lead preparing for tech interviews, check out our technical interview checklist, ...