diff --git a/java/vector/src/main/java/org/apache/arrow/vector/util/VectorAppender.java b/java/vector/src/main/java/org/apache/arrow/vector/util/VectorAppender.java
index 823b1df0954f6..9f73732ccfdd3 100644
--- a/java/vector/src/main/java/org/apache/arrow/vector/util/VectorAppender.java
+++ b/java/vector/src/main/java/org/apache/arrow/vector/util/VectorAppender.java
@@ -43,7 +43,7 @@
 /**
  * Utility to append two vectors together.
  */
-class VectorAppender implements VectorVisitor<ValueVector, Void> {
+public class VectorAppender implements VectorVisitor<ValueVector, Void> {
 
   /**
    * The targetVector to be appended.
@@ -56,7 +56,7 @@ class VectorAppender implements VectorVisitor<ValueVector, Void> {
    * Constructs a new targetVector appender, with the given targetVector.
    * @param targetVector the targetVector to be appended.
    */
-  VectorAppender(ValueVector targetVector) {
+  public VectorAppender(ValueVector targetVector) {
     this.targetVector = targetVector;
     typeVisitor = new TypeEqualsVisitor(targetVector, false, true);
   }