diff --git a/.gitignore b/.gitignore
index d6658fd..3303732 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,6 @@
 .gradle/
 
 # Ignore Gradle build output directory
-build
\ No newline at end of file
+build
+
+bin/
\ No newline at end of file
diff --git a/classlevel/lambdaexpressions/01_temp/bin/.settings/org.eclipse.buildship.core.prefs b/classlevel/lambdaexpressions/01_temp/bin/.settings/org.eclipse.buildship.core.prefs
deleted file mode 100644
index 31e003a..0000000
--- a/classlevel/lambdaexpressions/01_temp/bin/.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=c\:/Gradle
-java.home=
-jvm.arguments=
-offline.mode=false
-override.workspace.settings=true
-show.console.view=true
-show.executions.view=true
diff --git a/classlevel/lambdaexpressions/01_temp/bin/main/Main.class b/classlevel/lambdaexpressions/01_temp/bin/main/Main.class
deleted file mode 100644
index e64cd60..0000000
Binary files a/classlevel/lambdaexpressions/01_temp/bin/main/Main.class and /dev/null differ
diff --git a/datetime/DT_01_currentdate/bin/.gitignore b/datetime/DT_01_currentdate/bin/.gitignore
deleted file mode 100644
index 7eed456..0000000
--- a/datetime/DT_01_currentdate/bin/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-/main/
-/test/