diff --git a/part4/java_designPattern/.gitignore b/part4/java_designPattern/.gitignore
new file mode 100644
index 00000000..5bd05d62
--- /dev/null
+++ b/part4/java_designPattern/.gitignore
@@ -0,0 +1,2 @@
+target
+.idea
\ No newline at end of file