How to install Java in Ubuntu

Java has always been one of the most widely used programming languages, and many devices run on the Java platform. For anyone who wants to learn Java or run Java-based applications in an Ubuntu system, knowing how to install Java on Ubuntu is crucial. This article will introduce you in detail the steps to install Java on Ubuntu system. These methods work on Ubuntu 18.04, 20.04, 22.04 and newer versions.

Step-by-step guide to installing Java in Ubuntu

Installing Java in Ubuntu system is very simple. Just have a user account with sudo privileges and a reliable network connection. You can choose to install different Java platforms such as Java Standard Edition, JavaFX, etc. In this example, we will focus on Java Standard Edition, which provides the Java Development Kit (JDK) and Java Runtime Environment (JRE). First, you can open a terminal and use the apt package manager to install the default Java Development Kit (OpenJDK): ``` sudo apt update sudo apt install default-jdk ``` Once the installation is complete, you can verify that the Java installation was successful: ``` java-version ``` Next, you may also need to install the Java Runtime Environment (JRE) in order to run Java applications on your system: ``` sudo apt install default-jre ``` Likewise, you can verify the installation of the JRE: ``` java-version ``` Through these steps, you have successfully installed Java Standard Edition in your Ubuntu system and can start Java development or run Java applications. The installation process is simple and quick, allowing you to easily

When installing Java on Ubuntu, you need to install JDK and JRE. JDK enables you to easily develop Java applications, while JRE provides a running environment for Java-based applications. Both platforms are free and open source and can be easily installed and used by anyone.

Here are the steps to install Java in Ubuntu.

Step 1: Refresh the device

When you want to get the latest package from the Ubuntu repository, you should use the "apt" command to update the repository.

$sudo APT update

Next, let us confirm whether Java has been installed in the Ubuntu system. You can confirm this by checking the version of Java. If Java is already installed on your system, you will see the JDK version information displayed on the terminal. If Java is not installed, you will receive output similar to the following, indicating that the installation information for Java was not found. This step is very important because Java is required in many applications and development environments, and ensuring that Java is installed on your system will allow you to run these applications and development tools smoothly.

Step 2: Install JRE

When installing the JDK, the corresponding JRE package is usually automatically installed. But if there is a problem with the JRE, or if you just need to run Java applications instead of developing, you can install the JRE manually. Doing so ensures that your Java environment can run properly and improves application stability and performance.

$sudo apt installation default-jre

When prompted, press "y". Then, let the installation proceed to completion. All required packages and dependencies will be installed and you will have a JRE available on your Ubuntu.

You will see a "done" message on the last line of the terminal confirming a successful installation.

Step 3: Install JDK

Ubuntu supports Java. From the official Ubuntu repository, you can install OpenJDK 11. OpenJDK 11 will be installed automatically if you choose to run the following command:

$sudo apt default installation-JDK

However, you have room to specify a different JDK version. Your project may require the latest JDK version, such as OpenJDK 18. Fortunately, when installing the JDK, you can specify whichever version you want to install.

For example, let's install OpenJDK 18. To do this we will change the command as follows:

$sudo apt install openjdk—18—jdk

Once you confirm the installation, OpenJDK will be installed and you will now have Java available on your system and can start writing code and build it successfully.

At this point, you can view the available JDK versions on Ubuntu.

The given output confirms that we have OpenJDK 18 installed on Ubuntu. This is how to easily install Java in Ubuntu. These steps will work on the previously mentioned Ubuntu versions. Additionally, you can apply the same method on other distributions such as Linux Mint.

in conclusion

Java is a powerful programming language that you can use for different projects, including desktop and mobile applications. To build Java projects on Ubuntu, JDK and JRE must be installed. Additionally, if you want to run Java-based applications, you must install JRE on Ubuntu. The steps presented in today’s article will guide you on what steps you should take to install Java in Ubuntu. have fun

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