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...
If your company is hiring a Java developer, check out this Java test prepared by our professionals. It will allow you to identify the best talents very easily![Question #1 – Player/Weapon – OOP design]Consider the following code written by one of our interns:public...
Another useful interview strategy is to review potential Java interview questions in advance. Let’s check out examples of some of the top Java interview questions. Also, each question includes some information that can help refresh your memory. The topics we will cover include: General Java inter...
Below are five examples of basic java problems. These questions are simple in nature, testing only one concept. They are meant to be solved in a collaborative integrated development environment (IDE). You can access the sample inputs, sample outputs, and base code for each question by ...
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[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...
Please refer earlier question for these rules. - If a class field is not used in equals(), you should not use it in hashCode() method. - Best practice for user defined key class is to make it immutable, so that hashCode() value can be cached for fast performance. Also immutable ...
---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...
6.2.1Interface can be used to implement the multiple inheritances while the abstract can not. Because the Java only provides the single inheritance. 6.2.2There is no implementation in the interfaces. But in abstract class, you can implement some common logic. ...
Sorry that seems to be basic or silly question, but am confused and need a little help here. Can you kindly please brief on this. I had completely drifted away by the explanation of random/fixed hashcode() value for key. ——— When hashcodes for different objects are recommended to be...