Slightly more advanced would be to use a ConcurrentHashMap to ensure thread safety of the internal data structure, but this doesn’t get around the fundamental problem of races between the get() and put() calls. To solve that, we need to synchronize on the individual account. One possible...
The questions you were exposed to in this Java Interview Questions blog remain the most commonly asked questions by recruiters in the industry. We are certain that these sets of Java Interview Questions will be of great help to you if you are preparing for interviews. If you'd like to read...
Inheritance is a fundamental concept in object-oriented programming, where a class inherits properties and behaviors from another class, known as the superclass or base class. The class that inherits these properties is called the subclass or derived class. In Java, inheritance allows code reuse, ...
A while statement checks at the beginning of a loop to see whether the next loop iteration should occur. A do statement checks at the end of a loop to see whether the next iteration of a loop should occur. The do statement will always execute the body of a loop at least once. 27What...
This is one of the most common and fundamental Java interview questions. This is something you should have right at your finger-tips when asked. The eight Primitive Data types supported by Java are: Byte : 8-bit signed two’s complement integer. It has a minimum value of -128 and a max...
interfacescompletely changed how we look at both fundamental building blocks of Java language. You cannot skip this question if your resume says you work on Java 8. In the linked tutorial, I will show you the correct scenarios, which will help you crack some complex interview questions and ...
are a complete beginner in this area then I would suggest you first start with a fundamental ...
Learn the Core Java basics. This topic is for those learning Java programming or having general Java programming questions. It is a fundamental guide, aimed at beginners to java programming. PL/SQL If you are looking to learn PL/SQL, this is the site. It provides the help you need to ge...
Our Java Interview Cheat Sheet covers six fundamental areas that frequently come up in interviews:我们的Java 面试备忘单涵盖了面试中经常出现的六个基本领域: OOP Concepts 面向对象的概念At the heart of Java lies Object-Oriented Programming. We’ve summarized the key principles: Encapsulation, Inheritance...
Encapsulation is one of the four fundamental OOP concepts. It is a mechanism of wrapping the data (variables) and code acting on the data (methods) together as a single unit. In encapsulation, the variables of a class will be hidden from other classes, and can be accessed only through the...