Very large programs may require more RAM for adequate performance.
Running with less memory may cause disk swapping, which has a severe effect on performance. More RAM is recommended for applets running within a browser using Java Plug-in technology. Note: The minimum physical RAM is required to run graphically based applications. The following table lists the minimum memory requirements for Windows 32-bit operating systems. See the table, "Disk Space Requirements for JRE" Java Runtime Environment, including JavaFX Runtime The table that follow show the various disk space requirements for the JRE and JDK: Disk Space Requirements for JRE JRE In addition to the disk space required for the installed images, there must be sufficient disk space for Java Update. 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, the installed image consists of all the files installed under the directory jdk1.7.0 for the JRE, it consists of all files installed under the directory jre1.7.0.Disk Space Requirementsįor the JDK, you are given the option of installing the following features: This information covers processor, disk space, and memory requirements for the following platforms:īoth the Java SE Development Kit (JDK) and Java SE Runtime Environment (JRE) require at minimum a Pentium 2 266 MHz processor. See JDK 7 and JRE 7 Installation Guide for general information about installing JDK 7 and JRE 7. Windows System Requirements for JDK and JRE
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