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Carlos Abad Molinero
Carlos Abad Molinero

Java SE 12: Download JDK 12 for Windows and Start Building Applications


JDK 12 Download for Windows: A Step-by-Step Guide




If you are a Java developer or a hobbyist who wants to create and run Java applications on your Windows computer, you will need to download and install the Java Development Kit (JDK) 12. In this article, we will show you how to do that in a few simple steps. We will also explain what JDK 12 is, what features and enhancements it offers, and how to update it when new versions are released.




jdk 12 download for windows



What is JDK 12 and why do you need it?




JDK 12 is the latest release of the Java Development Kit, which is a software package that provides the tools and libraries necessary for developing, testing, and running Java applications. The JDK includes the Java Runtime Environment (JRE), which is the software that executes Java programs on your computer, as well as the Java compiler, debugger, and other utilities.


You need JDK 12 if you want to use the latest features and improvements of the Java programming language, such as switch expressions, raw string literals, dynamic class-file constants, and more. You also need JDK 12 if you want to benefit from the performance enhancements, bug fixes, and security updates that Oracle provides regularly.


JDK 12 features and enhancements




JDK 12 introduces several new features and enhancements that make Java development easier and more efficient. Some of the most notable ones are:


  • Switch expressions: This feature allows you to use switch statements as expressions that can return a value, rather than as statements that only execute a block of code. This makes switch statements more concise and readable, and reduces the risk of errors.



  • Raw string literals: This feature allows you to write string literals that span multiple lines and contain any characters, without the need for escaping or concatenation. This makes it easier to write strings that contain formatted text, HTML, SQL, regex, etc.



  • Dynamic class-file constants: This feature allows you to create constants that are not statically resolved at compile time, but dynamically computed at run time. This enables more expressive and efficient code generation and linkage.



  • Shenandoah: A Low-Pause-Time Garbage Collector (Experimental): This feature introduces a new garbage collector that reduces the pause time caused by garbage collection, which improves the responsiveness of Java applications.



For a complete list of features and enhancements in JDK 12, you can refer to .


JDK 12 system requirements and compatibility




Before you download and install JDK 12 on your Windows computer, you should make sure that your system meets the minimum requirements and is compatible with JDK 12. Here are some of the key points to consider:


  • JDK 12 supports Windows 10 (64-bit), Windows Server 2019 (64-bit), Windows Server 2016 (64-bit), Windows Server 2012 R2 (64-bit), Windows Server 2008 R2 (64-bit), Windows Server 2008 SP2 (64-bit), Windows Server Core (64-bit), Windows Vista SP2 (32-bit), Windows XP SP3 (32-bit), Windows Embedded Standard Edition SP1 (32-bit).



  • JDK 12 requires at least 128 MB of RAM for Windows XP/Vista/7/8/10 (32-bit) or at least 256 MB of RAM for Windows Server/Windows Server Core (64-bit).



  • <li On the next page, find the checksum value that corresponds to the JDK 12 version that you downloaded.



  • Copy the checksum value and paste it into a text editor.



  • Open a command prompt and navigate to the location where you saved the installer file.



  • Type the following command and press Enter: certutil -hashfile filename SHA256, where filename is the name of the installer file.



  • Compare the output of the command with the checksum value that you copied. If they match, then the file is valid and safe to install. If they do not match, then the file is corrupted or modified and you should download it again.



How to install JDK 12 on Windows




Now that you have downloaded and verified the JDK 12 installer file, you can proceed to install JDK 12 on your Windows computer. You can do this by following these steps:


Run the JDK 12 installer file and follow the instructions




The first step is to run the JDK 12 installer file and follow the instructions on the screen. You can do this by following these steps:


  • Double-click on the installer file to launch it.



  • If you see a User Account Control prompt, click Yes to allow the installation.



  • On the Welcome screen, click Next to continue.



  • On the Choose Destination Location screen, choose where you want to install JDK 12 on your computer. You can use the default location or browse to a different one. Click Next to continue.



  • On the Choose Features screen, choose which components of JDK 12 you want to install. You can use the default selection or customize it according to your needs. Click Next to continue.



  • On the Installation Options screen, choose whether you want to create a Start Menu folder for JDK 12 and whether you want to associate .jar files with Java. Click Next to continue.



  • Wait for the installation process to complete. It may take a few minutes depending on your system speed and configuration.



  • On the Installation Completed screen, click Close to exit the installer.



Set the JAVA_HOME and PATH environment variables




The next step is to set the JAVA_HOME and PATH environment variables on your Windows system. These variables tell your system where to find JDK 12 and how to run Java commands from any directory. You can do this by following these steps:


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  • Open the Control Panel and click on System and Security.



  • Click on System and then click on Advanced system settings on the left sidebar.



  • Click on Environment Variables at the bottom of the System Properties window.



  • In the User variables section, click on New to create a new variable.



  • In the New User Variable window, enter JAVA_HOME as the variable name and enter the path to your JDK 12 installation directory as the variable value. For example, if you installed JDK 12 in C:\Program Files\Java\jdk-12, then enter that as the value. Click OK to save the variable.



  • In the User variables section again, find In the User variables section again, find the variable named PATH and click on Edit. If you do not see the variable, click on New and create it with the name PATH.



  • In the Edit User Variable window, click on New and enter %JAVA_HOME%\bin as the new value. This will append the JDK 12 bin directory to your PATH variable. Click OK to save the changes.



  • Click OK to close the Environment Variables window and click OK again to close the System Properties window.



Verify the JDK 12 installation




The last step is to verify that JDK 12 is installed correctly and working on your Windows system. You can do this by following these steps:


  • Open a command prompt and type the following command: java -version. Press Enter to execute the command.



  • You should see the output that shows the version, build, and vendor of JDK 12. For example, you may see something like this:



java version "12" 2023-03-19 Java(TM) SE Runtime Environment (build 12+33) Java HotSpot(TM) 64-Bit Server VM (build 12+33, mixed mode, sharing)


  • If you see the output as expected, then JDK 12 is installed correctly and working on your system. If you see an error message or a different version, then something went wrong and you may need to troubleshoot the installation.



How to update JDK 12 on Windows




JDK 12 is


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