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...
It always helps to have a programming portfolio say a game on Android or an iPhone App to your credit, to back up your claims. 1. What is Object-Oriented Programming? This is probably the first question you’ll be asked. Object-Oriented Programming, as the name suggests, deals with ...
Java 8 has been released in March 2014, so it’s one of the hot topics in java interview questions. If you answer this question clearly, it will show that you like to keep yourself up-to-date with the latest technologies. Java 8 has been one of the biggest releases after Java 5 anno...
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...
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. ...
To avoid this, add a question mark at the end of each item being accessed. This tells Javascript to use optional chaining. When using optional chaining, if the object being accessed is undefined, the entire operation short circuits and evaluates to undefined. // Safe property access with opt...
1.17.How to Make a Java class immutable? An immutable class is one whose state can not be changed once created. There are certain guidelines to create a class immutable in Java and you must know them to answer this question correctly. ...
Question-31. Can we implement all the concepts of OOPS using the keyword struct ? Answer- Yes. Question-32. What is the block scope variable in C++ ? Answer- A variable whose scope is applicable only within a block is said so. Also a variable in C++ can be declared anywhere within the...
15 Essential C# Interview Question from Toptal C# interview questions from dotnetfunda.com Top 50 C# Interview Questions & Answers 50 C# Coding Interview Questions and Answers 20 C# OOPS Interview Questions and Answers 30+ C# Interview Questions ...
Depending on the language used to write the managed type, it may or may not be visible by default. Specifically, .NET Framework components are accessed from COM by using a COM callable wrapper (CCW). This is similar to an RCW (see previous question), but works in the opposite direction....