Чашечка Java

Как войти в блокчейн-разработку через Java и Kotlin: представляем JVM SDK смарт-контрактов Всем привет! Меня зовут Степан Кашинцев, я руководитель группы разработки в Waves Enterprise, а конкретно — подразделения, отвечающего за создание децентрализованных приложений, реализующих процессы реального бизнеса на базе нашего блокчейна. В этом посте я хочу рассказать о нашем SDK для JVM-языков программирования, с помощью которого каждый Java/Kotlin-разработчик сможет попробовать себя в создании блокчейн-приложений. Читать: https://habr.com/ru/post/678062/?utm_campaign=678062

Top 24 Java Date, Time, and Calendar Interview Questions Answers The Date and Time API is a significant one for day-to-day Java development work, but many interviewers don't ask enough questions on this topic. Most of the questions are based on either Java Collection framework like HashMap, ConcurrentHashMap, or ArrayList or multi-threading concepts like volatile, synchronized, and atomic variables. This is not good, and many interviewers have realized that a good understanding of date and time API is also important for a good Java developer. That's the main reason for increasing date, time, and calendar-based Java interview questions in recent times, particularly in the last couple of years. Java Interview questions and tutorials Read: http://www.java67.com/2017/08/top-10-date-time-and-calendar-Java-Interview-Questions.html

Top 40 Binary Tree Coding Interview Questions for Programmers Hello guys, if you are preparing for coding interviews and want to master tree-based questions then you have come to the right place. A tree is one of the most important data structures because it allows you to store hierarchical data as opposed to an array and linked list which allows storing linear data. That's why knowledge of tree data structure is very important from an interview point of view. A lot of programmers and my readers have been asking me to share some binary tree-based coding interview questions, just like I have done for the array, linked list, string, software design, patterns, hash table, and data structure in general. Java Interview questions and tutorials Read: http://www.java67.com/2020/02/top-40-binary-tree-interview-questions.html

Top 20 Project Management Interview Questions Answers for 2 to 5 Years Experienced Hello guys, if you are preparing for project manager interview and looking for frequently asked Project Management interview questions with Answers then you have come to the right place. In the past, I have shared best books and courses to learn Project Management, including best PMP courses to prepare for popular Project Management Professional Certification and in this article, I am going to share 20 common Project Management related questions from Interviews. But, before we get to some of the most important and frequently asked Project Management interview questions, let me tell you a little bit about what Project Management is. Java Interview questions and tutorials Read: http://www.java67.com/2022/06/project-management-interview-questions.html

Top 20 Cloud Computing Interview Questions with Answers As most of you must already know, cloud computing has recently emerged as a hotspot because of its easy usability. Cloud computing is not just limited to IT and software firms. It is used by companies across sectors like banking, retail, computing, education, and automobile. Many companies all over the world have begun using cloud computing for data storage and implementation. If you are looking to get into cloud computing, opportunities are limitless and the remunerations are high. Java Interview questions and tutorials Read: http://www.java67.com/2022/06/cloud-computing-interview-questions.html

Top 20 Bootstrap Interview Questions With Answers for Web Designers and Developers Hello guys, if you are preparing for web design and development interview and looking for Bootstrap interview questions then you have come to the right place. Earlier, I have shared HTML 5 Interview Questions and best online courses to learn HTML, CSS and Bootstrap courses and today, I am going  to share bootstrap interview questions with answers.  Here is a chance for you to make sure that you go into that Bootstrap interview with your head up high. Being ready for that interview is the major step that you can make as you seek to impress the interview panel on the interview day. Java Interview questions and tutorials Read: http://www.java67.com/2022/06/top-20-bootstrap-interview-questions.html

Top 20 PL/SQL Interview Questions with Answers Hello guys, if you are preparing for Oracle or PL/SQL Job or a Developer job where PL/SQL skills are needed and looking for frequently asked PL/SQL Interview Questions then you have come to the right place. Earlier, I have shared both best PL/SQL courses and best PL/SQL books and in this article, I am going to share popular PL/SQL Interview Questions you can revise before your interview. Preparing for PL/SQL Interview is not a rocket science and you can prepare for it the same way you prepare for other interviews. Java Interview questions and tutorials Read: http://www.java67.com/2022/06/top-20-plsql-interview-questions-with.html

Top 20 Web Development Interview Questions with Answers Hello guys, if you are preparing for web developer job and looking for popular web development interview questions for preparation then you have come to the right place. Earlier, I have shared HTML Interview Question, CSS Interview Questions, and JavaScript Interview Questions and in this article, I am going to share common web development interview questions. You may be thinking how much different it is from other list but this is a general questions about web development like web services, images, SOAP, REST, Pagination etc. Java Interview questions and tutorials Read: http://www.java67.com/2022/06/web-development-interview-questions.html

Top 20 AI Interview Questions with Answers Hello guys, if you are preparing for AI developer interview and looking for AI Interview questions and answers then you have come to the right place. Earlier, I have shared Python Interview Questions and Machine Learning Interview Questions and in this article, I am going to share 20 common Artificial Intelligence Interview Questions with answers for 1 to 2 years experienced professionals. If you have worked in the field of AI then you most likely know the answers of all of these questions but if you cannot answer then you can always check these best AI Courses to learn and improve your AI fundamental concepts. Java Interview questions and tutorials Read: http://www.java67.com/2022/06/ai-interview-questions-with-answers.html

Top 20 Cyber Security Interview Questions with Answers Hello guys, if you are preparing for Cyber Security Engineer Job interviews and looking for frequently asked Cyber Security Interview questions with answers then you have come to the right place. Earlier, I hare shared best Cyber Security online courses and best Ethical Hacking online courses and in this article, I am going to share 20 common Interview Questions for Cyber Security Professionals. These interview questions are great to revise key Cyber Security concepts, tools, and process before you go for any interview. Java Interview questions and tutorials Read: http://www.java67.com/2022/06/cyber-security-interview-questions.html

Нетология и ВШЭ проводят день открытых дверей в рамках магистерской программы «Кибербезопасность» Встреча будет полезна как выпускникам бакалавриата по IT-направлениям, так и практикующим специалистам в кибербезопасности. На ней спикеры обсудят, с какими сложностями столкнулись специалисты по ИБ в 2022, какие решения выработали и над какими задачами еще предстоит работать. Участие бесплатное: https://tprg.ru/Xtzr Это #партнёрский пост

Программирование JavaFX: использование SceneBuilder В прошлой статье мы начали разговор о фреймворке JavaFX, который позволяет создавать интерфейсы, оставаясь в рамках знакомой вам среды разработки (не нужно изучать веб-технологии). В этот раз мы поговорим о средстве упрощения и ускорения разработки интерфейсов — SceneBuilder. Читать: https://habr.com/ru/post/676290/?utm_campaign=676290

Obituary: Alex Blewitt It is with great sadness that we announce that InfoQ editor Dr. Alex Blewitt has unexpectedly passed away. By Daniel Bryant Read: https://www.infoq.com/news/2022/07/alex-blewitt/

Gradle и нетривиальная конфигурация Каждый из нас знакомился с новомодными библиотеками, фреймворками, инструментами по getting started статьям из документации. В них всё складывается как по полочкам, в пёстрых красках показывается как всё просто и легко. Однако зачастую картина меняется, когда в Ваш новорожденный проект требуется подключить не одну условную библиотеку, а набор. Getting started осложняются появлением инородных элементов, и в процесс приходится подключать инстинкты. Когда за плечами многолетний опыт разработки и не один поднятый с колен проект, такая задача не видится проблемной. Однако, когда Вы делаете это в первый раз, инстинкты подводят. Впоследствии оглядываясь назад, мы жалеем о том, что в начале у нас не было опыта, который есть сейчас. Да и откуда было бы его получить? Ведь в getting started о таком не пишут, а проекты, в которых мы работаем не с самого начала, уже прошли этап становления. Читать: https://habr.com/ru/post/677826/?utm_campaign=677826

Top 20 DevOps Interview Questions with Answers Hello guys, if you are preparing for DevOps Engineer job interview or a Developer interview then preparing DevOps questions is quite important. I have seen a couple of DevOps related questions on Java developer interview in last a couple of years. Interviewers are now expecting you to become familiar with Cloud, DevOps and essential DevOps tools like Docker, Kubernetes, Ansible, Terraform tec. If you have been moving around looking for a way which will help you pass your DevOps interview that is around the corner, you have come to the right place at the right time. Java Interview questions and tutorials Read: http://www.java67.com/2022/07/devops-interview-questions-with-answers.html

Лояльность покупателей — гигантская ответственность, а не просто технологии Всем привет. Я Игорь, тимлид в команде, которая занимается системой лояльности в CSI. Расскажу, как работают и устроены системы лояльности в ритейле, о том, как мы создали новую архитектуру системы Set Loyalty, что применяем из фреймворков и инструментов. Читать: https://habr.com/ru/post/677792/?utm_campaign=677792

Is it Possible to add static or private methods in Java interface? Can you add a static or private method in an interface in Java? or is it possible to add a private or static method in Java interface? or can you add a non-abstract method on an interface in Java? are a couple of popular Java interview questions which often pop up during telephonic interviews. Well, prior to Java 8, it wasn't possible to add non-abstract methods in Javabut nowadays you can add non-abstract static, default, and private methods in the Java interface. The static and default methods were supported as part of interface evolution in Java 8 and you can add private methods on an interface from Java 9 onwards. Java Interview questions and tutorials Read: http://www.java67.com/2019/02/can-you-add-non-abstract-method-on-interface-in-java.html

How to use PreparedStatement in Java - JDBC Example Tutorial PreparedStatement is used to execute specific queries that are supposed to run repeatedly, for example, SELECT * from Employees WHERE EMP_ID=?. This query can be run multiple times to fetch details of different employees. If you use PreparedStatement like above then the database assists in query preparation, which is faster and more secure. Such kinds of queries are compiled, and their query plans are cached at the database side every time you execute it, you will get a faster response as opposed to using simple queries via Statement object, like SELECT * from Employees WHERE EMP_ID + emp_id. Java Interview questions and tutorials Read: http://www.java67.com/2019/08/how-to-use-preparedstatement-in-jdbc-java.html

How to Create and Start Multiple Threads in Java? - Example Tutorial Hello guys, Multithreading is one of the biggest strengths of Java, which allows you to divide a task and execute faster by using more than one thread. In order to use multiple threads in Java, you need to first define the task which will be executed by those threads. In order to create those tasks, you can either use the Runnable or Callable interface. If you are just learning Java chose the Runnable interface, it's a simpler one, but if you are familiar with Java multithreading and want to leverage additional features offered by Callable like it can throw an exception and it can also return value, then go ahead and use the Callable interface. Once you have the task ready, you need to create an instance of the Thread class. Java Interview questions and tutorials Read: http://www.java67.com/2016/05/how-to-use-multiple-threads-in-java.html

How to use wait, notify, and notifyAll in Java? Example Tutorial When should you use the wait() and notify method in Java is one of the many popular questions about the wait and notify methods from Java multithreading interview questions. One of the reasons for its popularity is that still a lot of Java programmers struggle to explain and write code using wait-notify methods.  Many Java developer only knows some facts about the wait and notify methods like that wait() and notify() are defined in the java.lang.Object class or you cannot call wait() without synchronization, which means without a synchronized block or synchronized method but doesn't really know when and how to use them. Java Interview questions and tutorials Read: http://www.java67.com/2019/05/when-and-how-to-use-wait-and-notify-in-Java.html