Learn Java and Programming through articles, code examples, and tutorials for developers of all levels.
Top 10 Udemy Courses for Java Developers - Best of Lot
CodeCademy vs Datacamp vs Udemy? Which one to Join in 2023?
Hello guys, if you are looking to upskill yourself this year, want to learn new tech and programming skill, and want to join an online learning platform or are confused between Udemy, Codecademy, and Datacamp then you have come to the right place. In the past, I have reviewed Udemy, Pluralsight, and Educative and in this article, I am going to review Udemy, DataCamp, and Codecademy learning platforms based upon their strength and weaknesses, and learning styles. For most people, online education is one of the best approaches to achieving your goals, whether starting a new business or learning new programming skills and even negotiation in general.
Top 10 Tools for REST API Development and Testing to Learn in 2023
Hello guys, it's been a long time since I have shared useful tools. Last, I have shared the best tools for Java developers to learn and then the best data visualization tools for Data Scientists to learn. So, today, I am going to write about 10 essential tools for REST API development and Testing. These are the tools that will help you in every stage of your REST-based project like design, development, testing, and documentation. If you are creating REST APIs in Java or any other programming language, most of the tools like Postman which are HTTP based are equally useful but a couple of tools are most suitable for Java developers.Without wasting any more of your time, here is my list of 10 useful tools every REST developer should learn
10 Examples of WebClient In Spring Framework and 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.
Top 20 Firebase Interview Questions and Answers for Developers
Difference between wait() and join() methods in Java Multithreading? [Answered]
Difference between Callable and Runnable in Java? call() vs run() method
What is Volatile Variable in Java? When to Use it? Example
The volatile variable in Java is a special variable that is used to signal threads and compilers and runtime optimizers like JIT that the value of this particular variable is going to be updated by multiple threads inside the Java application. By making a variable volatile using the volatile keyword in Java, the application programmer ensures that its value should always be read from the main memory and the thread should not use the cached value of that variable from their own stack. With the introduction of the Java memory model from Java 5 onwards along with the introduction of CountDownLatch, CyclicBarrier, Semaphore, and ConcurrentHashMap.
Difference between synchronized block and method in Java? Thread Example
Producer Consumer Problem with Wait and Notify - Thread Example Tutorial
Java CountDownLatch Example for Beginners - [Multithreading Tutorial]
2 Ways to Read a Text File in Java? BufferredReader and Scanner Examples
How to do Inter process communication in Java? MemoryMapped File Example Tutorial
Why wait() and notify() method should be called inside a loop in Java? Example
Java CyclicBarrier Example for Beginners [Multithreading Tutorial]
Difference between wait and sleep in Java Thread? Example
How to Sort ArrayList of Objects by Fields in Java? Custom + Reversed Order Sorting Comparator Example
How to send Email in Java using Spring Framework? JavaMailSenderImpl Example Tutorial
How to Delete Objects from ArrayList in Java? ArrayList.remove() method Example
How to convert an ArrayList to Array in Java? Example
ArrayList.contains(), size(), clear, asList(), subList(), toArray(), and isEmpty() Example in Java
ArrayList in Java is one of the most popular Collection classes. ArrayList is an implementation of the List interface via AbstractList abstract class and provides an ordered and an index-based way to store elements. Java ArrayList is analogous to an array, which is also index-based. In fact, ArrayList in Java is internally backed by an array, which allows them to get constant time performance for retrieving elements by index. Since an array is fixed length and you can not change their size, once created, Programmers, starts using ArrayList, when they need a dynamic way to store object, i.e. which can re-size itself. See the difference between Array and List for more differences.
How to read a File line by line in Java 8 ? BufferedReader lines() + Stream Examples
Difference between HashSet, TreeSet, and LinkedHashSet in Java
10 Examples of ArrayList in Java
How to Fix Reference Error: $ is not defined in jQuery and JavaScript [Solved]
How to fix java.net.SocketException: Broken pipe, Connection reset, and Too many open files in Java?
How to fix ArrayIndexOutOfBoundsException and StringIndexOutOfBoundsException in Java?
How to Fix Spring Boot cannot access REST Controller on localhost (404) Error in Java
Hello guys, if you are getting "cannot access REST Controller on localhost (404)" error in your Spring Boot application and wondering how to solve it then you have come to the right place. Earlier, I have shared how to solved 5 common Spring Framework errors and exception and in this article, we will take a look at the spring boot can’t access rest controller on localhost (404) issue. A 404 Not Found Error for your REST Controllers is a relatively typical problem that many developers encounter while working with Spring Boot applications. In this Spring boot tutorial, let's explore why such an error took place, and later on, we will learn how to fix this issue.
25 Examples of ConcurrentHashMap in Java
2 Ways to sort a Map in Java by Keys? TreeMap and HashMap Example
How to Remove Entry (key/value) from HashMap in Java while Iterating? Example Tutorial
How does HTTP Request is handled in Spring MVC? DispatcherServlet Example Tutorial
How to Convert a List to Map in Java 8 - Example Tutorial
How to use Stream and Lambda Expressions to write better code in Java? Examples
What is Default or Defender Methods in Java 8? Tutorial Example
11 Examples of LocalDate, LocalTime, and LocalDateTime in Java 8
How to Convert Stream to List, Set, and Collection in Java 8? Example Tutorial
Difference between Hibernate, JPA, MyBatis
How to test a Spring Boot application in Java? @SpringBootTest Example
5 Best Python Tutorials For Beginners in 2023
Hello guys, if you want to learn Python programming language in 2023 and looking for best online resources like tutorials, courses, books, projects and websites then you have come to the right place. Earlier, I have shared best Python courses, both free and paid, as well as best Python books, projects, and even Python interview questions for job interviews and today, I Am going to share best Python tutorials for beginners in 2023. We all know that a computer can work without a system or program to tell them what to do, which means you need to learn a language to program it and how it works. There are a lot of languages to learn, but python is one of the high-level and easy to learn and start. This post will help you get the best resource to get started using the python language.
6 React.js Performance Tips Every Web Developer Should Learn
9 Tips to become a Better Software Developer in 2023
Many of my readers, students, and programmers often asked me how to improve their programming skills, coding skills, or design skills. I know it's not easy to be a professional programmer. Apart from programming and coding, you have to be good at communicating ideas, designing solutions and, more importantly, convincing peers and stakeholders. Ideally, you learn all these qualities at your workplace by working with more experienced and smarter people than yourself, but that's just an ideal scenario. Many programmers don't get lucky enough to work with a fellow programmer who helps them to grasp these skills; often, it's your own hard work.
7 Reasons of NOT using SELECT * in a Production SQL Query? Best Practices
Top 5 Programming languages for Backend development
How to use Stream allMatch() and anyMatch() function in Java? Example Tutorial
Hello friends, we all know how streams are super important for our day-to-day needs in Java programming and coding nowadays. It allows us to filter data in memory in a declarative way, it also allows us to transform objects as well create a complex Stream pipeline to represent our business logic in a declarative fashion. But, do we know all the stream functionalities? Of course not. Earlier, we have seen examples of filter(), map, flatMap, and findFirst() method and today we will learn two of the most important stream functions anyMatch() and allMatch(). So what’s the wait? Let's start!
How to use Stream findFirst and findAny function in Java? Example Tutorial
Hello friends, here we are again on the journey of Java excited and eager to find the next stop of knowledge. But do not worry my friends, continuing the java stream series further, today we will deep dive into two other functions of streams that are equally important and interesting. Let me start by providing a situation that you guys can analyze and then we will discuss it. Let’s say you have data coming into your code through an API call. Now, you have no idea what the stream of data would be but you want the first element present in it. So, stream provides a function for the same. Let’s see what it is and how it is written.