diff --git a/.gitignore b/.gitignore
index 667cc9f..64c2558 100644
--- a/.gitignore
+++ b/.gitignore
@@ -68,4 +68,5 @@
 
 ### Scala ###
 *.bloop
-*.metals
\ No newline at end of file
+*.metals
+*/target/*
\ No newline at end of file
diff --git a/java-info/.scalafmt.conf b/java-info/.scalafmt.conf
new file mode 100644
index 0000000..a79ab29
--- /dev/null
+++ b/java-info/.scalafmt.conf
@@ -0,0 +1,8 @@
+version = "3.0.6"
+
+align.preset = some
+runner.dialect = scala212
+maxColumn = 80
+docstrings.style = Asterisk
+docstrings.removeEmpty = true
+project.git = true
diff --git a/java-info/pom.xml b/java-info/pom.xml
new file mode 100644
index 0000000..a7f534b
--- /dev/null
+++ b/java-info/pom.xml
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2022 Alibaba Group Holding Limited.
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
+  ~ except in compliance with the License. You may obtain a copy of the License at
+  ~
+  ~ http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software distributed under the
+  ~ License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+  ~ express or implied. See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.apache.graphar</groupId>
+    <artifactId>java-info</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.13.2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.yaml</groupId>
+            <artifactId>snakeyaml</artifactId>
+            <version>2.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.hadoop</groupId>
+            <artifactId>hadoop-common</artifactId>
+            <version>3.4.0</version>
+        </dependency>
+    </dependencies>
+
+
+</project>
\ No newline at end of file
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/AdjacentList.java b/java-info/src/main/java/org/apache/graphar/info/AdjacentList.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/AdjacentList.java
rename to java-info/src/main/java/org/apache/graphar/info/AdjacentList.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/EdgeInfo.java b/java-info/src/main/java/org/apache/graphar/info/EdgeInfo.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/EdgeInfo.java
rename to java-info/src/main/java/org/apache/graphar/info/EdgeInfo.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/GraphInfo.java b/java-info/src/main/java/org/apache/graphar/info/GraphInfo.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/GraphInfo.java
rename to java-info/src/main/java/org/apache/graphar/info/GraphInfo.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/Property.java b/java-info/src/main/java/org/apache/graphar/info/Property.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/Property.java
rename to java-info/src/main/java/org/apache/graphar/info/Property.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/PropertyGroup.java b/java-info/src/main/java/org/apache/graphar/info/PropertyGroup.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/PropertyGroup.java
rename to java-info/src/main/java/org/apache/graphar/info/PropertyGroup.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/VertexInfo.java b/java-info/src/main/java/org/apache/graphar/info/VertexInfo.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/VertexInfo.java
rename to java-info/src/main/java/org/apache/graphar/info/VertexInfo.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/type/AdjListType.java b/java-info/src/main/java/org/apache/graphar/info/type/AdjListType.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/type/AdjListType.java
rename to java-info/src/main/java/org/apache/graphar/info/type/AdjListType.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/type/DataType.java b/java-info/src/main/java/org/apache/graphar/info/type/DataType.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/type/DataType.java
rename to java-info/src/main/java/org/apache/graphar/info/type/DataType.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/type/FileType.java b/java-info/src/main/java/org/apache/graphar/info/type/FileType.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/type/FileType.java
rename to java-info/src/main/java/org/apache/graphar/info/type/FileType.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/yaml/AdjacentListYamlParser.java b/java-info/src/main/java/org/apache/graphar/info/yaml/AdjacentListYamlParser.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/yaml/AdjacentListYamlParser.java
rename to java-info/src/main/java/org/apache/graphar/info/yaml/AdjacentListYamlParser.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/yaml/EdgeYamlParser.java b/java-info/src/main/java/org/apache/graphar/info/yaml/EdgeYamlParser.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/yaml/EdgeYamlParser.java
rename to java-info/src/main/java/org/apache/graphar/info/yaml/EdgeYamlParser.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/yaml/GraphYamlParser.java b/java-info/src/main/java/org/apache/graphar/info/yaml/GraphYamlParser.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/yaml/GraphYamlParser.java
rename to java-info/src/main/java/org/apache/graphar/info/yaml/GraphYamlParser.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/yaml/PropertyGroupYamlParser.java b/java-info/src/main/java/org/apache/graphar/info/yaml/PropertyGroupYamlParser.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/yaml/PropertyGroupYamlParser.java
rename to java-info/src/main/java/org/apache/graphar/info/yaml/PropertyGroupYamlParser.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/yaml/PropertyYamlParser.java b/java-info/src/main/java/org/apache/graphar/info/yaml/PropertyYamlParser.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/yaml/PropertyYamlParser.java
rename to java-info/src/main/java/org/apache/graphar/info/yaml/PropertyYamlParser.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/info/yaml/VertexYamlParser.java b/java-info/src/main/java/org/apache/graphar/info/yaml/VertexYamlParser.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/info/yaml/VertexYamlParser.java
rename to java-info/src/main/java/org/apache/graphar/info/yaml/VertexYamlParser.java
diff --git a/spark/graphar/src/main/java/org/apache/graphar/util/GeneralParams.java b/java-info/src/main/java/org/apache/graphar/util/GeneralParams.java
similarity index 100%
rename from spark/graphar/src/main/java/org/apache/graphar/util/GeneralParams.java
rename to java-info/src/main/java/org/apache/graphar/util/GeneralParams.java