Dear readers, the app for java developers! The app include bible of all java,best for java developers & interview. ---these Java Interview Questions have been…
It’s a great design question and asked a lot in java interviews. This post provides all the differences between abstract class and interface. When should we use interface over the abstract class and vice versa? The post also explains how to use abstract class and interface to create a flexi...
This java interview question is mostly for candidates who claim at least 2 years of experience working in a sizeable team. Working together with many people on a large codebase has its own unique set of difficulties, one of which is how to coordinate large-scale changes without stepping on ...
As you see,there is no null check in add() methodin the previous question. AndHashMapalso allows onenullkey, soHashSet allows one “null” item. TreeSet uses the same concept asHashSetfor internal logic but usesNavigableMapfor storing the elements. privatetransientNavigableMap<E,Object>m;/...
11. Can you write critical section code for singleton? This core Java question is followup of previous question and expecting candidate to write Java singleton using double checked locking. Remember to use volatile variable to make Singleton thread-safe. ...
[Interview Question ][Data Structure] Two Sum Problem -Array Two sum problem is one of the most asked data structure questions for a java developer interview. There could be one or more ways to solve the problem but i am trying to give the optimized solution to this problem. Lets first...
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Redis :https://redis.io/documentation Dubbo:http://dubbo.apache.org/zh-cn/docs/user/quick-start.html ShardingJDBC:https://shardingsphere.apache.org/document/current/cn/features/ 在线阅读 使用语雀提供了较好的阅读体验 https://www.yuque.com/itsaysay/mzsmvg...
-- Configuration locations must consist of one or more comma- or space-delimited fully-qualified @Configuration classes. Fully-qualified packages may also be specified for component-scanning --><context-param>contextConfigLocationcom.howtodoinjava.AppConfig</context-param><!-- Bootstrap the root ...
Looking forward to appear in Java Interview, here are the key 100+ Java Interview Questions with Answers only for you including some of the tricky questions with answers.Table of ContentsSr.No.Question 1 What are new Java8 Features? 2 Difference between GET & POST METHODS? 3 Difference betwee...