This issue was reported manually by hmichel.
It already has 4 duplicates
Build: NetBeans IDE Dev (Build 20150918-6beda17842be)
VM: Java HotSpot(TM) 64-Bit Server VM, 25.51-b03, Java(TM) SE Runtime Environment, 1.8.0_51-b16
hmichel: Creating a method based on CC suggestion
Monezz: Use auto completion (ctrl+space)
no scanning or other tasks where performed on the background.
around 30 projects (maven platform application modules) open.
I was actually selecting getMyVariable for auto generation after using autocomplete on getM<ctrl+space>
hmichel: Generating a getter for a simple property
iluvtr: Slow NetBeans generating getter
Maximum slowness yet reported was 23475 ms, average is 15854
Created attachment 156391 [details]
As can be seen from the attached snapshot, AWT EDT waits for the parsing lock which is held for an extremely long time by ComputeImports. Fixed in jet-main by improving cancel support in ComputeImports.
Integrated into 'main-silver', will be available in build *201509250002* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
User: Dusan Balek <email@example.com>
Log: Issue #255521 - org.netbeans.modules.editor.java.JavaCompletionItem$GetterSetterMethodItem.substituteText: LowPerformance - fixed.