Чашечка Java

Spring Batch 5.0 Delivers JDK 17 Baseline and Support for Native Java VMware released Spring Batch 5.0. Baselined to Java 17 and the latest Spring Framework 6.0, Spring Batch now supports GraalVM native image, a new Observation API, Java Records, and a long list of enhancements and fixes made by more than 50 contributors. By Shaaf Syed Read: https://www.infoq.com/news/2022/12/spring-batch-5-released/

10 Examples Of Spring 5 WebClient In Java Hello guys, if you are wondering how to use WebClient on Spring Framework and looking for simple how to examples of WebClient then you have come to the right place. Earlier, I have shared 10 example of RestTemplate in Spring Framework and in this article, I Am going to share 10 example of WebClient in Spring. These examples covers everything from sending GET request to REST API and consuming response, and also sending POST, PUT, and PATCH request to RESTful Web Services. You will also learn how to set header like Basic Authentication and Authorization header, cookies and much more. Java Interview questions and tutorials Read: http://www.java67.com/2022/12/10-examples-of-spring-5-webclient-in.html

​Какие инструменты нужно изучить тем, кто кто хочет создавать отказоустойчивые и масштабируемые архитектуры? Узнайте и начните осваивать некоторые из них на открытых уроках в OTUS, которые состоятся в рамках онлайн-курсов «Microservice architecture» и «Highload Architect»: 9 декабря в 20:00 — «RESTful API паттерны» Поговорят о REST, рассмотрят уровни зрелости REST, затронут HATEOAS, рассмотрят паттерны REST и посмотрят, как они реализуются в json-api и odata, сгенерируют клиент к сервису по openapi idl. Для участия необходимо пройти вступительный тест — https://otus.pw/rfMS/ 🗓 21 декабря в 20:00 — «Протокол WebSockets» На занятии разберут особенности протокола WebSockets, а также рассмотрят примеры использования с nginx, webrtc. Для участия необходимо пройти вступительный тест — https://otus.pw/kqNs/ Занятия будут полезны бэкенд-разработчикам, тимлидам и администраторам. Реклама ООО «Отус Онлайн-Образование»

Top 5 Solidity courses for Beginners to Learn in 2023 - Best of Lot Hello friends, we are here again today for another exciting topic to discuss. But, today, we are not gonna discuss something related to Java or any other language or spring boot. Today we are gonna discuss something which is immensely practical and has the potential to land you very high paying jobs. Today, we are going to take a look at the best available Solidity courses online. Java Interview questions and tutorials Read: http://www.java67.com/2022/04/5-best-solidity-courses-for-beginners.html

Top Java Blogs Weekly: Best of 52/2022 Best of Top Java Blogs, year 2022, week 52 Read: https://www.topjavablogs.com/news/best-of-52-2022

Top 20 Oracle Database Interview Questions with Answers for 3 to 5 Years Experienced Hello guys, if you are a developer or a database administrator and preparing for Oracle database interview and need common Oracle database questions for 1 to 5 years experienced then you have come to the right place. Earlier, I have shared tricky SQL query interview questions as well as popular database interview questions and in this article, I am going to share popular Oracle interview questions with answers. If you have used Oracle database for a couple of years or worked as Oracle database administrator then most likely you will know answers of all these questions but if you struggle to answer them then you can always go back and checkout these best Oracle database online courses to learn and revise key Oracle database concepts. Java Interview questions and tutorials Read: http://www.java67.com/2022/06/top-20-oracle-database-interview.html

Java Capitalize First Letter of Each Word Read: https://www.thejavaprogrammer.com/java-capitalize-first-letter-of-each-word/

Top 5 Features Of Spring 6 To Learn In 2023 Hello guys, if you are wondering what is New in Spring Framework 6 release and what new feature it has got or what does it support now then you have come to the right place. In this article, I will share 5 key changes from Spring Framework 6 which are worth knowing for Every Java developer. Before we get to the top 5 features of Spring that you need to definitely learn in 2023, let me tell you a bit more about what Spring Framework really is. Java Interview questions and tutorials Read: http://www.java67.com/2022/12/top-5-features-of-spring-6-to-learn-in.html

Difference between 32-bit vs 64-bit JVM in Java? Hello Java Programmers, if you want to learn Java virtual Machine in-depth and wondering what is the difference between a 32-bit and 64-bit JVM and which one should you use and why? then you have come to the right place. Earlier, I have shared the best JVM booksand online JVM coursesand in this article, I am going to talk about 32-bit vs 64-bit JVM and their pros and cons. This is also a common Java interview question for beginners and intermediate Java programmers. I have tried to answer this question to the point that's why this article is a short but informative one. You will find out what they are, how they are different, how much heap size, and the pros and cons of each of them. Java Interview questions and tutorials Read: http://www.java67.com/2019/12/difference-between-32-bit-vs-64-bit-jvm.html

How to remove duplicate(s) from linked list in Java? Example Tutorial Hello guys, if you are wondering how to find duplicates in a given linked list in Javathen you have come to the right place. In the past, I have explained how to reverse a linked list in Java, find kth element from tail in linked list, find cycle on linked list, and in this article, I will show you how to find duplicate nodes in a given linked list. This is one of the classic linked list coding problemand I have also included this in my list of 30 common linked list problemsfor programmers. You can further check that list to practice more linked list programs and improve your understanding of linked lists and how to solve those problems. But, before we get into details of finding and printing duplicate nodes from the given linked list let's start with the basics. Java Interview questions and tutorials Read: http://www.java67.com/2022/02/how-to-remove-duplicates-from-linked-list-.html

10 Examples Of Mockito + JUnit in Java for Unit Testing Hello guys, if you are writing unit test in Java then you know how difficult it is to write especially if you are testing a class which is dependent upon other class like HttpClient and you cannot connect to actual server. At those time, a mocking library like Mockito comes to rescue. Given the increased focus on unit testing and code coverage, I have find myself using Mockito more and more along with JUnit in last a couple of years but I haven't written many articles on Mockito yet but that is chaging now. In this article, I am going to share 10 essential Mockito examples which I belive every Java programmer should know. But, before we get to the 10 best examples that will teach you everything there is to know about Mockito in Java, let me tell you a little bit more about what it really is. Java Interview questions and tutorials Read: http://www.java67.com/2022/12/10-examples-of-mockito-junit-in-java.html

Может ли Java-приложение использовать больше памяти, чем размер кучи Возможно, вы замечали, что Java-приложение может превышать лимит памяти, указанный в параметре -Xmx (максимальный размер кучи). Дело в том, что JVM помимо кучи использует и другие области памяти. Давайте начнем со структуры памяти Java-приложения и источников потребления памяти. Читать: https://habr.com/ru/post/705982/?utm_campaign=705982

Четвёртый раунд битвы языков программирования 2022 В четвёртом раунде за звание лучшего языка программирования в 2022 году соревнуются JavaScript и TypeScript, Rust и Java. Читать: «Четвёртый раунд битвы языков программирования 2022»

Article: Java InfoQ Trends Report - December 2022 This report provides a summary of how the InfoQ Java editorial team and several Java Champions currently see the adoption of technology and emerging trends within the Java and JVM space in 2022. We focus on Java the language, as well as related languages like Kotlin and Scala, the Java Virtual Machine (JVM), and Java-based frameworks and utilities. By Michael Redlich, Ben Evans, Johan Janssen, Dalia Abo Sheasha, Billy Korando, Otavio Santana Read: https://www.infoq.com/articles/java-jvm-trends-2022/

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How to convert Java 8 Stream to Array and ArrayList in Java? Example Tutorial It's relatively easy to convert a Stream to an array in Java 8by using the toArray()method of java.util.Stream class. By using this method you can convert any type of Stream to a corresponding array like a Stream of Strings can be converted into an array of String, or a Stream of integers can be converted into an array of Integers. The Stream.toArray()method is also overloaded, the one which doesn't take any parameter returns an Object[] which might not be very useful, particularly if you want to convert Stream of T to an array of T. Java Interview questions and tutorials Read: http://www.java67.com/2017/04/how-to-convert-java-8-stream-to-array-and-list-in-java.html

Amazon CloudFront Signed URLs and Cookies are now supported in AWS SDK for Java 2.x Read: https://aws.amazon.com/blogs/developer/amazon-cloudfront-signed-urls-and-cookies-are-now-supported-in-aws-sdk-for-java-2-x/

10 Examples Of RestTemplate in Spring Framework, Spring Boot and Java Hello guys, if you are wondering how to send GET and POST request to your API or Web Service from a Java based Spring Framework then you would be glad to know that You can use use RestTemplate class from Spring Framework. It's a fully functional HTTP client which is really really useful in this age of API. I have used RestTemplate to consume JSON from API before as well as sending different kind of request like POST, PUT, DELETE and PATCH to any REST API. For example, in this article, I shared how to send POST request using RestTemplate and how to set header on HTTP request using RestTemplate. Yes, RestTemplate also allow you to send headers like Authorization on Http Request. Java Interview questions and tutorials Read: http://www.java67.com/2022/12/10-examples-of-resttemplate-in-spring.html

Array length vs ArrayList Size in Java [Example] One of the confusing parts in learning Java for a beginner to understand how to find the length of array and ArrayList in Java? The main reason for the confusion is an inconsistent way of calculating the length between two. Calling size() method on arrays and length, or even length() on ArrayList is a common programming error made by beginners. The main reason for the confusion is the special handling of an array in Java.  Java native arrays have built-in length attribute but no size() method while the Java library containers, known as Collection classes like ArrayList, Vector, etc,  all have a size() method. Java Interview questions and tutorials Read: http://www.java67.com/2014/04/array-length-vs-arraylist-size-java.html

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