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...
[](https://journaldev.nyc3.cdn.digitaloceanspaces.com/2013/01/java-hashmap-entry-impl.png) The other important things to know about HashMap are capacity, load factor,...
Why this technical question?While not requiring very complex algorithms or data structures, this java technical question is still not easy to get completely right on the first try. There are several edge cases that need to be taken into account. Moreover, the question as stated is ambiguous ...
This question is themost importantand is most likely to be asked at every job interview level. You must be very clear on this topic., not only because it is the most asked question but also it will open up your mind to further questions related to Collection APIs. The answer to this q...
() method from java.lang.Object, the finalize() method is called by garbage collector when it determines no more references to the object exists. In Java, it is good idea to explicitly assign null into a variable when no more in use. I Java on calling System.gc() and Runtime.gc(),...
[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...
Spring:https://spring.io/guides 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 ...
has seen this question on core Java or J2EE interview. Well there are many difference between them but most important isthread-safety,HashMapis not thread-safe whileHashtableis thread-safe collection. SeeHashtable vs HashMap in Javafor more differences between HashMap and Hashtable in Java. ...
---these Java Interview Questions have been designed especially to get you acquainted with the nature of questions you may encounter during your interview for the subject of Java Programming Language. As per my experience. ---Good interviewers hardly planned to ask any particular question during yo...
FAQs on Java Math Random Question 1: What is the return type of the Math.random() method? It returns a double in the range 0.0 ( inclusive ) and 1.0 (exclusive) Question 2: Do Math.random and Random.nextInt() belong to the same java packages? No. Math.random belongs to java.lang...