Remove the JDK or JRE using Add or Remove Programs from the Windows Control Panel. You may see a misleading message if you do the following:ĭownload and cache a Java Web Start application with the JDK or JRE. Previous releases have separate uninstallation instructions for Java Web Start. Uninstalling the JDK or JRE will not, however, remove the cache for previous versions of Java Web Start. The only way to uninstall Java Web Start is to uninstall the JDK or JRE. The is a registry string in the "JRE" or "Java Runtime Environment" key. "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime = 1.8 "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.8.0" "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.8" "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\JRE\ = 10 The is a registry string in the "JDK" or "Java Development Kit" key.įor the same example, if the JRE is installed, then the registry layout is: "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development = 1.8 "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit\1.8.0" "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit\1.8" "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\JDK\ = 10 "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Development Kit" for JDK 1.8.0 and "HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\JDK" for JDK 10. For example, if JDK 1.8.0 and JDK 10 are installed, then the following registry keys are created: If there are two versions of JDK or JRE installed on a system, one with the new version-string format introduced in JDK 10, and the other with the older version format, then there will be two different CurrentVersion registry key values. HKEY_LOCAL_MACHINE\Software\JavaSoft\Java Web Start\ RuntimeLib: the full path name of the Java runtime DLL JavaHome: the full path name of the directory in which the JRE is installed Or, go to the Java downloads page directly here on where you can find the JRE and the JDKĪgain, you will likely need to disable SIP protection on the Mac before being allowed to complete the installation.This key contains the following string values:.Open a Terminal and type “java -version” then click the “More Info” button to jump to the Java downloads page.The other option is to get the most recently available version of Java from Oracle. Install Java 8 in OS X EL Capitan from Oracle Do that first and Java will install just fine. If you run into errors on installation, it’s because you skimmed through the introduction and did not disable SIP / rootless on the Mac. That will download an installer that you can use for OS X El Capitan (and Yosemite and Mavericks for that matter). Get legacy Java for OS X 2015-001 from Apple.So, unless you have a need for Java 6 specifically, you’d likely want to get a newer version, or if you don’t need Java at all, just don’t install it. To be clear, Java 6 is a version from 2013, it is outdated and no longer supported by Oracle, it has various known security holes, and is therefore inappropriate for most Mac users to install without a compelling reason. You can install legacy versions of Java in OS X El Capitan by using the Java for OS X 2015-001 installer, which includes Java 6. Install Java SE 6 in OS X El Capitan from Apple If you get stuck on “verifying…” during the installation process of Java, it’s because of rootless. Mac users may need to disable rootless SIP protection in OS X before being able to successfully install Java, but you can enable it again after it has been installed. And if you’re not sure whether you need Java or not, that means you probably do not need Java at all, and you can also avoid installing java. To be clear, if you do not need Java, you should not install Java. Whatever the case, if you need Java JRE or Java JDK in OS X 10.11 or later, here’s how you can install it. Additionally, when trying to use some particular applications or web content, you may come across a “This application requires the legacy Java SE 6 runtime which is unavailable for this version of OS X.” error message, which means if you want to run that app you’re going to need to use an older version of Java.
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