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Also refer to the Installation Prerequisites page for the list of all applications necessary to install and work with the product, and links to them.

Check if JDK is Already Installed

If you are not sure whether you have JDK installed, please confirm it by doing the following:

• Run a complete directory search (using the "All File and Folders" option if available) on your drives for the occurrence of "jdk" in the file name.
  
  • If your results retrieve a folder with the name "jdk" immediately followed by a series of version numbers (for example, jdk1.6.0_27), then your JDK is installed. You should ensure that the installation files in this folder are intact. If you are unsure of this, re-installation of the JDK is recommended. Otherwise, set your JAVA_HOME environment variable correctly. Refer to section Installing on Windows from Binary Distribution for instructions on setting the JAVA_HOME.
  • If you do not retrieve a result like this, then it is possible that your JDK has not been installed.

JAVA_HOME Variable Set-up Needed
After the Java Development Kit (JDK) is installed, check that the JAVA_HOME environment variable is set correctly. This is necessary for the installation of all WSO2 products.