diff --git a/.vscode/launch.json b/.vscode/launch.json
index 08fbd84..6201037 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -4,12 +4,18 @@
     // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
     "version": "0.2.0",
     "configurations": [
+        {
+            "type": "java",
+            "name": "CodeLens (Launch) - Main",
+            "request": "launch",
+            "mainClass": "Main",
+            "projectName": "sequential_migration"
+        },
         {
             "type": "java",
             "name": "Debug (Launch) - Current File",
             "request": "launch",
             "mainClass": "${file}"
         }
-       
     ]
 }
\ No newline at end of file
diff --git a/applications/README.md b/applications/README.md
deleted file mode 100644
index f87f5c1..0000000
--- a/applications/README.md
+++ /dev/null
@@ -1 +0,0 @@
-# TODO
\ No newline at end of file
diff --git a/classlevel/lambdaexpressions/01_temp/.classpath b/classlevel/lambdaexpressions/01_temp/.classpath
deleted file mode 100644
index 4857be4..0000000
--- a/classlevel/lambdaexpressions/01_temp/.classpath
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-	<classpathentry kind="src" output="bin/main" path="src/main/java">
-		<attributes>
-			<attribute name="gradle_scope" value="main"/>
-			<attribute name="gradle_used_by_scope" value="main,test"/>
-		</attributes>
-	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8/"/>
-	<classpathentry kind="con" path="org.eclipse.buildship.core.gradleclasspathcontainer"/>
-	<classpathentry kind="output" path="bin/default"/>
-</classpath>
diff --git a/classlevel/lambdaexpressions/01_temp/.project b/classlevel/lambdaexpressions/01_temp/.project
deleted file mode 100644
index db9c74f..0000000
--- a/classlevel/lambdaexpressions/01_temp/.project
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-	<name>01_temp</name>
-	<comment>Project 01_temp created by Buildship.</comment>
-	<projects>
-	</projects>
-	<buildSpec>
-		<buildCommand>
-			<name>org.eclipse.jdt.core.javabuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-	</buildSpec>
-	<natures>
-		<nature>org.eclipse.jdt.core.javanature</nature>
-		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
-	</natures>
-</projectDescription>
diff --git a/classlevel/lambdaexpressions/01_temp/.settings/org.eclipse.buildship.core.prefs b/classlevel/lambdaexpressions/01_temp/.settings/org.eclipse.buildship.core.prefs
deleted file mode 100644
index 3f52ec7..0000000
--- a/classlevel/lambdaexpressions/01_temp/.settings/org.eclipse.buildship.core.prefs
+++ /dev/null
@@ -1,13 +0,0 @@
-arguments=
-auto.sync=false
-build.scans.enabled=false
-connection.gradle.distribution=GRADLE_DISTRIBUTION(LOCAL_INSTALLATION(c\:\\Gradle))
-connection.project.dir=
-eclipse.preferences.version=1
-gradle.user.home=
-java.home=C\:/Program Files/Java/jdk1.8.0_131
-jvm.arguments=
-offline.mode=false
-override.workspace.settings=true
-show.console.view=true
-show.executions.view=true
diff --git a/classlevel/lambdaexpressions/01_temp/build.gradle b/classlevel/lambdaexpressions/01_temp/build.gradle
deleted file mode 100644
index 3936de6..0000000
--- a/classlevel/lambdaexpressions/01_temp/build.gradle
+++ /dev/null
@@ -1,11 +0,0 @@
-plugins {
-    id 'java'
-    id 'application'
-}
-
-
-application {
-    mainClassName = 'Main'
-}
-sourceCompatibility = '1.8'
-targetCompatibility = '1.8'
\ No newline at end of file
diff --git a/classlevel/lambdaexpressions/01_temp/src/main/java/Main.java b/classlevel/lambdaexpressions/01_temp/src/main/java/Main.java
deleted file mode 100644
index 098f7aa..0000000
--- a/classlevel/lambdaexpressions/01_temp/src/main/java/Main.java
+++ /dev/null
@@ -1,8 +0,0 @@
-
-public class Main {
-
-    public static void main(String[] args) {
-        // Ausgabe Hello World!
-        System.out.println("Hello World!");
-    }
-}
\ No newline at end of file