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To activate the Java Virtual Machine (JVM) and ensure Java applets or applications run correctly, follow these steps based on your platform or browser setup.
1. Enable Java in the Browser
If you're using a browser to run Java applets, ensure Java is enabled:
Internet Explorer: Go to Tools > Internet Options. Navigate to the Security tab and click Custom Level. Scroll to Scripting of Java Applets and select Enable. Click OK to save changes.
Firefox: Open the browser and go to Tools > Add-ons > Plugins. Locate the Java(TM) Platform Plugin and set it to Always Activate or Ask to Activate.
Safari: Open Preferences > Security > Allow Plug-ins > Manage Website Settings. Select Java, then choose an option like Allow Always for specific websites.
For Chrome, note that support for Java plugins has been discontinued since version 42.
2. Enable Java Through the Control Panel
To ensure Java is active system-wide:
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How do I enable Java in my web browser?
Learn how to enable the Java Runtime Environment (JRE) through your Web browser.
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