Dear Jabber, In fact I downloaded a software(Jedit.jar). The helpme.txt taught me to double click the Jedit.jar in Windows and click next, next then ok. I clicked then found nothing happened. I check the property of the file, it's "Executable Jar file" which means it can run directly. I checked the "open with" again, it's "Open with Javaw".
I transfered from Win98 to Winnt, all are ok! I could click the file name and it really ran and I could click next , next and finished the whole installation. I thought there must be something wrong with my Win98 or Java1.2.2 in Win98. I reinstalled the java but the problem was still there. Maybe .jar is not opened with Javaw.exe?
The JAVA -JAR doesn't work because we don't know the package and main().
Thank you. That's a small problem. At most, I use WinNT from now on although a little slower.