To update Java on a Windows 10 system, you can follow these steps:

1. Check Your Current Java Version: Before updating Java, it’s a good practice to check your current installed version to determine if an update is necessary. You can do this by opening a Command Prompt or PowerShell window and running the following command:

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   java -version

   This command will display information about your current Java version.

2. Visit the Oracle Java Website: To get the latest version of Oracle Java (if that’s what you’re using), visit the official Oracle Java website: https://www.oracle.com/java/technologies/javase-downloads.html

   If you prefer to use OpenJDK or a different Java distribution, you can find their official websites for updates.

3. Download the Latest Java Version: On the Oracle Java website, you’ll find a section for downloading the latest version of Java. Make sure to choose the appropriate version (e.g., Java SE 8, 11, 16, etc.) depending on your requirements. Download the installer that matches your system architecture (32-bit or 64-bit).

4. Run the Java Installer: Locate the downloaded Java installer file (usually with a .exe extension) and double-click it to run the installer. Follow the on-screen instructions to install the latest version of Java.

5. Complete the Installation: During the installation process, you may be asked to accept the license agreement and choose installation options. Make your selections accordingly and proceed with the installation.

6. Verify the Installation: After the installation is complete, you can verify that Java has been updated by running the java -version command again in your Command Prompt or PowerShell window. It should now display the new Java version.

7. Configure Your Applications: If you have Java-based applications, make sure to configure them to use the updated Java version if necessary. Most applications allow you to specify the Java runtime they should use in their settings or configuration files.