[Java] Bump to Arrow 10.0.0 (#271)

* [Java][Python] Bump to Arrow 10.0.0

* [Java] Bump to Arrow 10.0.0
diff --git a/java/source/conf.py b/java/source/conf.py
index fe3abb2..7ba4fa4 100644
--- a/java/source/conf.py
+++ b/java/source/conf.py
@@ -38,9 +38,9 @@
 author = 'The Apache Software Foundation'
 arrow_nightly=os.getenv("ARROW_NIGHTLY")
 if arrow_nightly and arrow_nightly != '0':
-    version = "10.0.0-SNAPSHOT"
+    version = "11.0.0-SNAPSHOT"
 else:
-    version = "9.0.0"
+    version = "10.0.0"
 print(f"Running with Arrow version: {version}")
 
 # -- General configuration ---------------------------------------------------
diff --git a/java/source/demo/pom.xml b/java/source/demo/pom.xml
index 60c119a..166b7b1 100644
--- a/java/source/demo/pom.xml
+++ b/java/source/demo/pom.xml
@@ -34,7 +34,7 @@
     <properties>
         <maven.compiler.source>8</maven.compiler.source>
         <maven.compiler.target>8</maven.compiler.target>
-        <arrow.version>9.0.0</arrow.version>
+        <arrow.version>10.0.0</arrow.version>
     </properties>
     <dependencies>
         <dependency>