Hier noch ein Auszug aus den Installation instructions:
Downloading the Installer
If you save the self-installing executable file to disk without running it from the download page at the web site, note the file size specified on the download page. After the download has completed, verify that you have downloaded the complete file.
Running the JDK Installer
You must have administrative permissions in order to install the JDK on Microsoft Windows.
The file jdk-8version-windows-i586-i.exe is the JDK installer for 32-bit systems. The file jdk-8version-windows-x64.exe is the JDK installer for 64-bit systems. If you downloaded either file instead of running it directly from the web site, double-click the installer's icon. Then, follow the instructions the installer provides. When finished with the installation, you can delete the downloaded file to recover disk space.
Installers for JDK 7u6 and later install the JavaFX SDK and integrate it into the JDK installation directory. Installers for JDK 7u2 to 7u5 install the JDK first, then start the JavaFX SDK installer, which installs JavaFX SDK in the default directory C:\Program Files\Oracle\JavaFX 2.0 SDK or C:\Program Files (x86)\Oracle\JavaFX 2.0 SDK on 64-bit operating systems. If you want to install the JavaFX SDK (version 2.0.2) with JDK 7u1 or earlier, see
http://docs.oracle.com/javafx/2/installation/jfxpub-installation.htm for more information.
Java Start Menu
Starting with JDK 7u40 release, Java menu items are added to the Windows Start Menu to provide easy access to Java resources.
During JDK install, a Java Development Kit folder is created in the Windows Start Menu, which contains the following items:
- Reference Documentation: Opens the Online API documentation web page.
- Java Mission Control: Opens the Java Mission Control profiling and diagnostics tools suite.
During JDK install and uninstall processes, the appropriate start menu items are updated to be associated with the latest JDK version on the system
Note:
Java Mission Control is a commercial feature available to users with a Java SE Advanced license.
Updating the PATH Environment Variable
If you do not set the PATH variable, you need to specify the full path to the executable file every time you run it, such as:
C:\> "C:\Program Files\Java\jdk1.8.0\bin\javac" MyClass.java
It is useful to set the PATH variable permanently so it will persist after rebooting.
To set the PATH variable permanently, add the full path of the jdk1.8.0\bin directory to the PATH variable. Typically, this full path looks something like C:\Program Files\Java\jdk1.8.0\bin. Set the PATH variable as follows on Microsoft Windows:
- Click Start, then Control Panel, then System.
- Click Advanced, then Environment Variables.
- Add the location of the bin folder of the JDK installation to the PATH variable in System Variables. The following is a typical value for the PATH variable:
C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files\Java\jdk1.8.0\bin
Note:
- The PATH environment variable is a series of directories separated by semicolons ( and is not case-sensitive. Microsoft Windows looks for programs in the PATH directories in order, from left to right.
- You should only have one bin directory for a JDK in the path at a time. Those following the first instance are ignored.
- If you are not sure where to add the JDK path, append it.
- The new path takes effect in each new command window you open after setting the PATH variable.