In .bashrc I have the following line:
export PATH=${PATH}:/usr/local/java/bin
When I type (after a computer reboot):
java -version
Java starts and gives me the version info... so the PATH is right.
Now when I enter the eclipse directory (under KDE) and start it with
./eclipse
it starts, and
Did you modify your path before or after you started KDE? And do you manually start
KDE (via startx) or are you loading kdm?
If you modified your path after you started KDE. Logout completly - down to console
(if manually started KDE) and off or logout and at your shell goto your home