Learn how to find which Java version (s) are installed without running an applet on Windows or Mac

This operating system is not supported. The Java Uninstall tool will only work on Microsoft Windows. Information for other operating systems: Uninstalling Java on Linux Uninstalling Java on Mac …

When you install Oracle Java on your Windows, Java will be enabled by default. If you are running a Java application in the browser, you will need to also check that Java is enabled in your browser.

Oct 21, 2025 · If you were asked to install Java to run a desktop application, it's most likely you need this version. Developers are encouraged to download the latest Java Development Kit from OTN …

Oracle Java is the #1 programming language and development platform. It reduces costs, shortens development timeframes, drives innovation, and improves application services.

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Uninstalling older versions of Java from your system ensures that Java applications will run with the latest security and performance improvements on your system.

However, it is always a good idea to use the latest version of Java to ensure you have the latest security fixes and enhancements. If your browser is not using the latest version you have installed, you will …

Setting the security level within the Java Control Panel will determine whether You are prompted before an untrusted java application is run (MEDIUM or HIGH) or Untrusted Java applications will be …

If you try to run a Java applet using a Java plug-in version that is identified as vulnerable, Firefox will prevent the applet from automatically loading and alert you that the plug-in is vulnerable. If an update …