myeclipse 9.1 fires a complete build everytime i make changes to one java file.
Reading through other forums, i had a workaround it.
The workaround is,
I removed my userlibraries from the build path and ran a full build, it gave me errors,
then i included them back and again ran a full build.
Since then, the problem seems to be sorted out for now and incremental build is working.