Eclipse hangs when I use Content Assist

Question

I am using Eclipse IDE for Enterprise Java Developers.

Version: 2020-09 (4.17.0)
Build id: 20200910-1200

I installed the JBoss tools plugin from the Eclipse Marketplace which is used for Hibernate. Then, after like a day, out of the blue the content assist stopped working. I wouldn't say JBoss is the culprit but I've read that installing plugins from the Eclipse marketplace seems to cause such errors. So whenever I tried to press Ctrl + Space for suggests, Eclipse would just hang and I had to force close it. Reinstalling it wouldn't be a solution for me as it's work through.

Answer 1

Such errors occur when you usually add a new plugin from Eclipse Marketplace, so do try uninstalling the plugin and see if the error goes off. Also...

For my case, I had to go to Windows > Preferences > Java > Editor > Content Assist > Advanced. I am not sure if this is the case for everyone, but I had these Default Proposal Kinds that didn't have any icon and were basically blank. Here in the image, "Basic proposals" and "WebSocket Proposals" were ticked and the icons were blank. I unchecked them and them and now the Content Assist works perfectly. The blank icon proposals disappeared when I uninstalled the Jboss plugin. So if your content assist is hindered anyhow, then do check your plugins and try uninstalling them safely. That should do the trick.