Hello Java programmers, We are at the beginning of 2023, so let’s set some goals to improve your career knowledge. If you want to learn anything about Java but are not sure what you want to learn, then you have come to the right place. This blog is about 15 tools Java developers must learn in 2023. If you already know some of these java tools, ignore them; otherwise, learn them. Happy New Year!
Spring Boot 3.0
I remember when I used the Spring MVC structure. It was difficult to grasp the concepts in Spring MVC. But after learning Spring MVC, Spring Boot becomes easier to learn and understand. Spring Boot is simpler than Spring MVC. It reduces lots of boilerplate code and helps developers become more productive by concentrating only on the business logic and not too much on the boilerplate code.
The latest version of Spring Boot is 3.0, which was released in November 2022. Spring Boot 3.0 will require JDK 17. JDK 8 is no longer supported. If you haven’t used Spring Boot 3.0 yet, you can migrate your project to version 3.0. However, there can be many libraries that are deprecated, so be careful.
If you are using Spring Boot 2. X but not 2.7.x, then upgrade to the most recent 2.7.x version before migrating to Spring Boot 3.0. For this, you have to use the migration guide provided by Spring. In 3.0, a few application properties are renamed or removed, so you need to be aware of that.
Git
Git is a version control system. It is an open-source system that is widely distributed. Git can be used when you want to share your source code with other team members on the same project. It tracks the changes in source code and who uploaded it & when. The user can manage the project with high speed and efficiency.
Git is a java tool, which is essential for Java developers as well as other developers. Every programmer should know about git and how to use it. If you didn’t learn in 2022, 2023 is the best time.
Docker
Docker is an open-source platform for building and deploying applications as containers. It uses Docker images which are deployable artifacts that contain your application with all its dependencies and can be used for deployment. Typically, you might encounter several issues. It includes running successfully on our local machine but being unable to run on the target machine due to a software version issue, configuration settings issue, file missing issue, and so on. However, if your system is integrated with Docker, then the same app can be run on other machines without any issues.
If you are not aware of Docker, you should learn it in 2023. Nowadays, every Java application uses Docker for automating deployment.
Maven
Maven is a project management java tool that is primarily used to manage dependencies. If we use Maven in the project, then the build process will be faster than ANT. It is based on the POM (Project Object Model).
POM is an XML file that contains information about the project and the dependencies you used in it, as well as Maven configuration information for building the project.
AWS
Amazon Web Services (AWS) is a cloud provider owned by Amazon. They provide over 170 services to their customers. AWS can be used for database management, deploying applications, storing data, source control systems, messaging services, authentication services, and so on. Cost-effectiveness, reliability, security, scalability, and high performance are all advantages of deploying a Java web application on AWS. For storage purposes, you can use AWS S3. However, for messaging services, you can use AWS SNS. For the authentication service, you can make use of AWS Cognito. There are many services available that can not be explained in detail in this blog.
All these services can be integrated into the java application. AWS provides many libraries to integrate AWS with java.
Hibernate
Hibernate is an open-source Java framework that is used for interacting Java objects with databases. It is an ORM (Object Relational Mapping) tool and is very lightweight. Hibernate can map the Java classes with database tables and Java data types to their corresponding SQL data types. It’s because the Hibernate framework can automatically create the table by writing the entity class. There is no need to write the query manually. It can also simplify writing a join query, which means we can easily fetch multiple tables.
Groovy
Groovy is an object-oriented and dynamic programming language for developing applications on the Java platform. The first release was Groovy 1.0, which was released on January 2, 2007. Groovy 3.0.14, which was released on December 21, 2022, is the most recent release. Groovy’s syntax is similar to Java’s syntax. So Java developers can easily learn this language. Groovy is not only a programming language but also a scripting language. It accepts Java code. Groovy is a superset of Java, which means Java programs can be run on Groovy.
JUnit
Unit testing is testing of a unit or part of a code or line of code which is part of the whole software. It should be a small block of code so that test cases can be executed faster. Uni testing increases the productivity of developers and saves their time because bugs will be less after running test cases successfully. It gives confidence to the developer after successful unit testing. Unit testing can be divided into two. One is manual testing and the other one is automated testing. If you execute the test cases manually without tool support, it is called manual testing. If you are testing the cases with java tool support, then it is called automated testing.
JUnit is an open-source unit testing framework in Java. It is used by Java developers to write and run test cases.org. The JUnit package gives many interfaces and classes for JUnit. JUnit is simple to write the code so the time can be reduced. JUnit 4.x framework is annotation based and the annotation can be used while writing the test cases. Some annotations are given below.
@Test(timeout=1000)
If you are doing manual testing, also try automated testing which includes JUnit. We can set a goal to apply the JUnit in the coming year so that you can be productive.
NoSql
A NoSQL database is used for storing and retrieving data. It is used when huge amounts of data need to be stored. NoSQL databases are non-relational databases, which means they do not use tabular databases for storage. It is a document-based database that is easy to use and has high performance. NoSql has a dynamic schema.
Examples of NoSQL databases are MongoDB, Redis, Neo4J, BigTable, etc.
NoSQL Database is not good for complex queries. If you are using complex queries, then go for SQL.
Kubernetes
Kubernetes is also known as K8S which is an open-source platform for automating the deployment, running, and managing containerized applications. It can be used with or without Docker. Kubernetes are developed by Google in 2014.
Apache Kafka
Apache Kafka is a distributed event streaming platform, which means it is used for handling and processing real-time, infinite data. It was developed by LinkedIn, but now it is owned by the Apache Software Foundation Team. Kafka is written in Java and Scala. It operates like RabbitMQ. Kafka is suitable for big data processing.
Gradle
Gradle is an open-source build automation java tool that is used for automating the creation of executable applications from code. It is based on the concepts of Apache Maven and ANT. It is free, has high performance and extensibility, and runs on JVM with IDE support such as IntelliJ IDEA, Android Studio, and others. Gradle can be used to run tasks such as Jar compilation and test case execution. Its build scripts are written in Groovy. Gradle is designed for multiple project builds. Developers can do the build process manually on smaller projects, but when it comes to larger projects, it is difficult to do the build process manually. In this scenario, you can make use of Gradle.
Jira
Jira is a software tool that was developed by Atlassian and is used for tracking issues, managing projects, and automating workflows. It is mainly used in agile methodologies. Jira is used worldwide, and it is trusted by over 65k companies.
Jira brings the development and testing teams together in the software development process. It can be used by the IT service team for incident management and issue ticketing.
Jenkins
Jenkins is an open-source java tool that is developed using Java with some other plugins. It is used for deploying source code into production and automating the build processes. Jenkins also reduces the time required to deploy the source code after it has been configured. Jenkins can be integrated with Slack so that developers can understand whether the deployment process has been successful.
I’ve used Jenkins before in a project. Deployment is done automatically after the code commits to the development branch. When it comes to Jenkins, you don’t need to worry about the deployment process, and we don’t need to spend time on the deployment.
Selenium
Selenium is a free, automated testing framework. Using Selenium, users can test using various web browsers such as Chrome, Firefox, Safari, and Opera. It can test web applications only and not mobile or desktop applications. Selenium can integrate with Junit for managing test cases. It’s a functional-level test. Selenium supports languages such as Java, C#, PHP, Python, and so on. Its web drivers are now popular with Java and C#.
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