![]() 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. With these security measures in place, users can rest assured knowing that they are protected while using Java applications.You must have administrative permissions in order to install the JRE. This makes the development process much easier since developers don’t have to worry about creating multiple versions of their applications for different platforms.Īnother advantage of using the JRE is its security features it has built-in sandboxing capabilities that help protect users against malicious software such as viruses, worms, and Trojans. One of the main advantages of using the JRE is its cross-platform compatibility any application written in Java should be able to run on almost any operating system without having to be rewritten for each platform. With the JRE installed on your computer, you can enjoy an array of benefits, such as portability, scalability, and cross-platform compatibility, when you run applications written in Java. The JRE includes the Java Virtual Machine (JVM), which interprets code written in the Java language and basic libraries and other components necessary for running Java programs. It is a set of tools and components that will allow Java programs to run on your computer. The Java Runtime Environment (JRE) is a software tool that enables you to run Java applications on your computer.
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