Would you like to remove Java-Application: name App from the Add or Remove program list?" If you say yes to this, then you will see another "Uninstaller Error" dialog box saying "You do not have sufficient access to remove Java-Application: name App from the Add or Remove Program list. When you remove the application, you see an "Uninstaller Error" dialog box saying "An error occurred while trying to remove Java-Application: name App. Remove the Java Web Start application using "Add or Remove Programs." 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 uninstall instructions for Java Web Start. Uninstalling the JDK/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/JRE. %ProgramData%\Oracle\Java\Javapath\javaws.exe %ProgramData%\Oracle\Java\Javapath\javaw.exe %ProgramData%\Oracle\Java\Javapath\java.exe Table 16-1 Java Executables and Symlinks Installed by the JRE Installer Java Executable The following table lists the JavaĮxecutables and symlinks that are installed: The JRE installer installs the Java executables javaw.exe and Will see the the version and build details for JRE 8u20. You run java -version from your Windows command prompt, then you This ensures that the userĬan always launch the newest JRE from the command line.įor example, if you have JRE 8u20 and JRE 7u60 installed on your system, and The java.exe symlink points to the bin directory HKEY_LOCAL_MACHINE\Software\JavaSoft\Java Runtime Environment\ The symlink is updated during install and uninstall using the The java.exe symlink always points to the newest JRE on the Path and can be launched from any directory location without giving the full HKLM\SYSTEM+\CurrentControlSet\Control\Session Manager\Environment\Path.Ĭonsequently, the java.exe executable is added to the user's system In addition, a symlink to the java.exeĮxecutable is created in the %ProgramData%/Oracle/Java/javapathĭirectory, and this path is prepended to the system RegKey value The Java executable java.exe is installed in the binĭirectory of the JRE. Īfter installation, use the Java item in the Windows Start menu to get access to essential Java information and functions, including help, the Java Control Panel, and checking for updates. See "Private Versus Public JRE" for more information about the public JRE.īy default, Java Access Bridge is disabled. (This also applies to the 64-bit version of the JDK.) You must set the PATH environment variable to point to JAVA_HOME \bin (where JAVA_HOME is the location where you installed the public JRE) to register the JRE. The public JRE installed with the JDK is not registered. When you are finished with the installation, you can delete the downloaded file to recover disk space. If you previously chose to hide some of the security prompts for applets and Java Web Start applications, the installer provides an option for restoring the prompts. The installer notifies you if Java content is disabled in web browsers, and provides instructions for enabling it. Follow the instructions the installer provides. If you saved the JRE installer to your computer, run the installer by double-clicking it. In addition to the disk space required for the installed images, there must be sufficient disk space for Java Update.You must have administrative permissions in order to install the JRE. Note that only advanced users should modify the settings for temporary files. In the Temporary Internet Files panel, click Settings. To determine the location of this directory, go to the Java Control Panel (from the Windows Control Panel). Java SE uses the directory %APPDATA% to store temporary files. For instance, the installed image for the JDK could be installed to a non-Windows drive with a custom installation. However, it is possible to install the installed image on any drive. The installed image will, by default, be installed on the Windows drive - the drive where the Windows operating system is installed (sometimes called the system drive). The directory Program Files\Common Files\Java\Java Update, or Program Files (x86)\Common Files\Java\Java Update on 64-bit operating systems, contains Java Update, which enables you to keep your computer up-to-date automatically with the latest JRE releases. For the JDK, you are given the option of installing the following features:įor the JDK, the installed image consists of all the files installed under the directory jdk1.8.0 for the JRE, it consists of all files installed under the directory jre1.8.0.
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