diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000000..0a8642fac0
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,10 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Zeppelin ignored files
+/ZeppelinRemoteNotebooks/
diff --git a/core-java-modules/core-java-numbers/README.md b/core-java-modules/core-java-numbers/README.md
index f2bd59fec9..1fdc2e11e5 100644
--- a/core-java-modules/core-java-numbers/README.md
+++ b/core-java-modules/core-java-numbers/README.md
@@ -1,6 +1,6 @@
 ## Java 数字（Number）
 
-This module contains articles about strings in Java.
+这个模块中包含有关 Java 数字（Number）有关的文章。
 
 ### 相关文章
 - [理解 Java 中的 NumberFormatException 异常](https://www.ossez.com/t/java-numberformatexception/13986)
diff --git a/core-java-modules/core-java-streams-4/.gitignore b/core-java-modules/core-java-streams-4/.gitignore
new file mode 100644
index 0000000000..3de4cc647e
--- /dev/null
+++ b/core-java-modules/core-java-streams-4/.gitignore
@@ -0,0 +1,26 @@
+*.class
+
+0.*
+
+#folders#
+/target
+/neoDb*
+/data
+/src/main/webapp/WEB-INF/classes
+*/META-INF/*
+.resourceCache
+
+# Packaged files #
+*.jar
+*.war
+*.ear
+
+# Files generated by integration tests
+*.txt
+backup-pom.xml
+/bin/
+/temp
+
+#IntelliJ specific
+.idea/
+*.iml
\ No newline at end of file