Detecting the JDK version

Author: pcristip (talk, contrib)

Description

The following code snippet detects whether Java Development Kit is installed on the machine and will set $1 to the version and $2 to the directory of the installation.

The Snippet

ClearErrors
ReadRegStr $1 HKLM "SOFTWARE\JavaSoft\Java Development Kit" "CurrentVersion"
ReadRegStr $2 HKLM "SOFTWARE\JavaSoft\Java Development Kit\$1" "JavaHome"
 
IfErrors 0 NoAbort
    MessageBox MB_OK "Couldn't find a Java Development Kit installed. Setup will exit now." 
    Quit        
 
NoAbort:
    DetailPrint "Found JDK in path $2"