I was using an old version of gant like 2.8 something. It has just updated to 3.2. It asked for the java 11 update. I downloaded this from Bellsoft. But it says i cannot run the Bellsoft and Java does not work with Microsoft edge according to Microsoft.
What do you mean as "But it says i cannot run the Bellsoft " Who says? What exactly do you get?
Windows installer of GanttProject 3.2 is bundled with its own Java runtime, you don’t need to download anything else.