diff --git a/.gitignore b/.gitignore
index 5dc6f0f..d6658fd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
 # Ignore Gradle project-specific cache directory
-.gradle
+.gradle/
 
 # Ignore Gradle build output directory
 build
\ No newline at end of file
diff --git a/classlevel/lambdaexpressions/01_temp/.gradle/5.4/executionHistory/executionHistory.lock b/classlevel/lambdaexpressions/01_temp/.gradle/5.4/executionHistory/executionHistory.lock
deleted file mode 100644
index d24c4b8..0000000
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diff --git a/classlevel/lambdaexpressions/01_temp/.gradle/5.4/fileChanges/last-build.bin b/classlevel/lambdaexpressions/01_temp/.gradle/5.4/fileChanges/last-build.bin
deleted file mode 100644
index f76dd23..0000000
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diff --git a/classlevel/lambdaexpressions/01_temp/.gradle/5.4/fileHashes/fileHashes.lock b/classlevel/lambdaexpressions/01_temp/.gradle/5.4/fileHashes/fileHashes.lock
deleted file mode 100644
index 8eb5dfa..0000000
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diff --git a/classlevel/lambdaexpressions/01_temp/.gradle/5.4/gc.properties b/classlevel/lambdaexpressions/01_temp/.gradle/5.4/gc.properties
deleted file mode 100644
index e69de29..0000000
diff --git a/classlevel/lambdaexpressions/01_temp/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/classlevel/lambdaexpressions/01_temp/.gradle/buildOutputCleanup/buildOutputCleanup.lock
deleted file mode 100644
index 4ba3997..0000000
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diff --git a/classlevel/lambdaexpressions/01_temp/.gradle/buildOutputCleanup/cache.properties b/classlevel/lambdaexpressions/01_temp/.gradle/buildOutputCleanup/cache.properties
deleted file mode 100644
index a558775..0000000
--- a/classlevel/lambdaexpressions/01_temp/.gradle/buildOutputCleanup/cache.properties
+++ /dev/null
@@ -1,2 +0,0 @@
-#Wed Jul 10 22:01:59 CEST 2019
-gradle.version=5.4
diff --git a/classlevel/lambdaexpressions/01_temp/.gradle/vcs-1/gc.properties b/classlevel/lambdaexpressions/01_temp/.gradle/vcs-1/gc.properties
deleted file mode 100644
index e69de29..0000000