To run the executable JAR file use the following command on the command line prompt of your system
(replace \ by / and omit .exe on Unix or Linux systems)
[JRE]\bin\java.exe -jar [AppDir]\AllDay.jar
[AppDir] in above command means the directory, you have installed AllDay on your computer. [JRE] means the directory, the Java 2 Sandard Edition (J2SE) Runtime Environment (JRE) is stored on your computer.
Note: All paths should not contain blanks. A path such as C:\Program Files\AllDay as the [AppDir] will only work if it is put in quotes, such as in " C:\Program Files\AllDay\AllDay.jar"
If your JRE is in directory
c:\programs\java\j2re1.4.0_01
and AllDay is in directory
c:\programs\AllDay\
the command to start AllDay would be
c:\programs\java\j2re1.4.0_01\bin\java.exe -jar c:\programs\AllDay\AllDay.jar
On Linux your JRE might be on
/usr/lib/java2/j2re1.4.0_01
and AllDay might be in
/opt/allday
then the command to run AllDay would be
/usr/lib/java2/j2re1.4.0_01/bin/java -jar /opt/allday/AllDay.jar
Above examples list the 'complete' way to start a Java application. When properly installed, the Java platform usually is well integrated into the desktop, i.e. an executable JAR file such as AllDay.jar usually can be launched by simply (double-) clicking its icon.
In lack of such integration certainly operating systems allow to shorten application launch processes by storing the original command as listed above in some kind of shortcut. With a shortcut an application usually is represented by an icon and a click on such icon starts the application.
Please consult the documentation of your operating system to find out how to create shortcuts for launching applications.