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...
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 ...
Garbage collection is one of the most important feature of Java. Garbage collection is also called automatic memory management as JVM automatically removes the unused variables/objects (value is null) from the memory. User program cann't directly free the object from memory, instead it is the jo...
In this case, the Java compiler will throw an error as “The method foo(String) is ambiguous for the type Test”. String and StringBuffer have no inheritance hierarchy. So none of them are more specific to others. A method is more specific than another if any invocation handled by the f...
[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...
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. ...
Java:https://docs.oracle.com/en/java/index.html 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/ ...
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...
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