Downloading and setting up environment in Java is an extremely quick and easy procedure. It just needs a few steps. First, you need to install Java Development Kit (JDK) on your computer. It includes Java Run environment, compiler, and other tools that are needed for Java applications. You can easily download Java through the Oracle website. After downloading it, use the installer to install the components. After installing Java Development Kit (JDK), you can start writing Java programs using any text editor of your choice.
Some of the popular environments are IntelliJ and Eclipse.
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What is JRE?
The Java Runtime Environment (JRE) is the software environment essential for running Java applications. It includes the classes, libraries, and files required for a computer to run Java programs. It works on the Java Virtual Machine (JVM), which is responsible for interpreting and carrying out Java bytecode operations. It makes Java platform independent. It includes standard libraries and files for flawless operation.
Installing the Latest JDK Version
You can easily install the latest JDK version on your computer through the latest Oracle software for free. However, you need to have an account to download. You can make one easily. Now, follow these steps to install the JDK kit on your computer.
- You need to go to the official website of Oracle and then click on the download button.
- Choose the version you want according to your system’s capabilities.
- You also need to choose whether you are downloading it on MAC, Windows, or Linux.Â
- Also, accept the license agreement by selecting the checkbox at the bottom.
- Now, you will have JDK and JRE on your system. You can then set up the environment variable.
Setting Up Environment in Java (JRE)
After downloading the Java Development Kit (JDK) from the official Oracle website. Download the latest version of the JDK for your operating system. After downloading, you need to run the installer on your system.Â
Now, you need to set the environment variable JAVA_HOME. This will help you find the location of the JDK on your computer. To set the environment variable on your computer.
Step 1: You can easily open Java environment variables by searching for Edit Setting Runtime Environment on the search option in the taskbar.
Step 2: Click on the advanced tab and then select the Environment Variable option.
Step 3: Now, search for the JAVA_HOME in the system variables and click on the Edit button.
Step 4: Now enter the path in the directory and add the bin directory to the environment variable.
Setting Up Environment in Java on MAC and Linux
Following these steps, you can easily set up the Java Runtime Environment on MAC and Linux.
Step 1: You need to open the.bash_profile or .bashrc file on your Mac or Linux.
Step 2: After opening the file, add this line of code to the file.
| Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Setting Up Environment on Java Runtime Environment on MAC And Linux |
| export PATH=$PATH:$JAVA_HOME/bin |
Step 3: After adding this line of code, you need to verify the installation by typing the following command in CMD. It will show the latest version of Java installed on your computer.Â
| Setting Up Environment in Java on MAC and Linux |
| Java -version |
Step 4: Make sure to uninstall the older version of the Java Development Kit (JDK) from your system as it may create a mess in your system. However, multiple JDK versions can be kept in your system.
Use of Java Runtime Environment (JRE)
The Java Run time environment is necessary for Java applications to run smoothly. Let us know about its uses here in this article.
1. Running of Java Applications: The main use of the Java Runtime Environment is to run Java applications. It is necessary to run Java programs on your computer.Â
2. Platform Independent: Java is platform-independent and can run easily on different devices. You can write Java code on any device once and run it on any platform with JRE.Â
3. Standard Libraries in JRE: The JRE includes a set of standard libraries and different APIs, which helps to simplify our programming tasks. You gain access to these standard libraries, which saves time and effort in application development.
4. Security Features: JRE provides security features with extensive sandboxing, restricting unrecognized access. It helps enforce these security measures, which can help protect the system from any threat.
5. Execution of Applet: The applet is necessary for web-based interactivity, just as the Java runtime environment is necessary for Java applets. However, many browsers have deprecated the use of Java applets due to different security concerns.
7. Debugging and Profiling: The JRE includes debugging tools that help optimize tests and diagnose code.
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Setting Environment In Java
What is the Java Runtime Environment?
The Java Runtime Environment is the first thing you need for Java to run on your computer. It contains the standard libraries and other important resources. It is easily downloaded with the JDK. However, setting up the environment in Java is given in this article.
Are JDK and the environment the same?
It is often seen that many people get confused with the JDK and JRE. JDK is a package set that contains the tools and resources for the development of Java-based applications. However, the JRE is a set of libraries and tools that help run the Java code on your computer.
How do I set up the JRE environment on your computer?Â
You can easily download the JRE Environment on your computer after downloading the latest JDK kit. However, a brief description of setting up the environment is given in this article.
How do JRE and JVM differ from one another?
The JRE identifies all the useful class libraries required for execution, while the JVM is a subclass of the JRE and performs minor tasks like decoding bytecode into machine language.Â
