diff --git a/.gitignore b/.gitignore
index 7921bff..3dc27fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -100,6 +100,7 @@ dkms.conf
 # ---> Java
 # Compiled class file
 *.class
+out/
 
 # Log file
 *.log
@@ -122,3 +123,9 @@ dkms.conf
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
 
+# source code provided by professor
+didacticalSources/
+
+# idea
+.idea/
+