Run Java *.JAR Program on N900?
 

How can I run other program on N900? (Ex: *.jar , N900 support this or not?)

Re: run program on N900
 

for .jar files, you'll need a Java runtime.

currently, there isn't one available in the repositories, but you could try to install it yourself:
JAVA on the N900 is possible!

this might also be of interest:
Java for Maemo 5

Re: Run Java *.JAR Program on N900?
 

Please search the archives before posting. This has been answered several times already in the past.