diff --git a/aufgabe 04-17/.gitignore b/aufgabe 04-17/.gitignore
deleted file mode 100644
index f68d109..0000000
--- a/aufgabe 04-17/.gitignore
+++ /dev/null
@@ -1,29 +0,0 @@
-### IntelliJ IDEA ###
-out/
-!**/src/main/**/out/
-!**/src/test/**/out/
-
-### Eclipse ###
-.apt_generated
-.classpath
-.factorypath
-.project
-.settings
-.springBeans
-.sts4-cache
-bin/
-!**/src/main/**/bin/
-!**/src/test/**/bin/
-
-### NetBeans ###
-/nbproject/private/
-/nbbuild/
-/dist/
-/nbdist/
-/.nb-gradle/
-
-### VS Code ###
-.vscode/
-
-### Mac OS ###
-.DS_Store
\ No newline at end of file
diff --git a/aufgabe 04-17/.idea/.gitignore b/aufgabe 04-17/.idea/.gitignore
deleted file mode 100644
index 26d3352..0000000
--- a/aufgabe 04-17/.idea/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
diff --git a/aufgabe 04-17/.idea/misc.xml b/aufgabe 04-17/.idea/misc.xml
deleted file mode 100644
index 07115cd..0000000
--- a/aufgabe 04-17/.idea/misc.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-
-
-
-
-
-
\ No newline at end of file
diff --git a/aufgabe 04-17/.idea/modules.xml b/aufgabe 04-17/.idea/modules.xml
deleted file mode 100644
index cf7ed30..0000000
--- a/aufgabe 04-17/.idea/modules.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-
-
-
-
-
-
-
-
\ No newline at end of file
diff --git a/aufgabe 04-17/.idea/vcs.xml b/aufgabe 04-17/.idea/vcs.xml
deleted file mode 100644
index 35eb1dd..0000000
--- a/aufgabe 04-17/.idea/vcs.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-
-
-
-
-
-
\ No newline at end of file
diff --git a/aufgabe 04-17/aufgabe 04-17.iml b/aufgabe 04-17/aufgabe 04-17.iml
deleted file mode 100644
index c90834f..0000000
--- a/aufgabe 04-17/aufgabe 04-17.iml
+++ /dev/null
@@ -1,11 +0,0 @@
-
-
-
-
-
-
-
-
-
-
-
\ No newline at end of file
diff --git a/aufgabe 04-17/src/Main.java b/aufgabe 04-17/src/Main.java
deleted file mode 100644
index 3e59c38..0000000
--- a/aufgabe 04-17/src/Main.java
+++ /dev/null
@@ -1,5 +0,0 @@
-public class Main {
- public static void main(String[] args) {
- System.out.println("Hello world!");
- }
-}
\ No newline at end of file