diff --git a/src/test/java/org/apache/datasketches/tuple/strings/AosSketchCrossLanguageTest.java b/src/test/java/org/apache/datasketches/tuple/strings/AosSketchCrossLanguageTest.java
new file mode 100644
index 000000000..dd425abfa
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+++ b/src/test/java/org/apache/datasketches/tuple/strings/AosSketchCrossLanguageTest.java
@@ -0,0 +1,112 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+
+package org.apache.datasketches.tuple.strings;
+
+import static org.apache.datasketches.common.TestUtil.GENERATE_JAVA_FILES;
+import static org.apache.datasketches.common.TestUtil.javaPath;
+import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertFalse;
+
+import java.io.IOException;
+import java.nio.file.Files;
+
+import org.apache.datasketches.common.ResizeFactor;
+import org.testng.annotations.Test;
+
+/**
+ * Serialize binary sketches to be tested by other language code.
+ * Test deserialization of binary sketches serialized by other language code.
+ */
+public class AosSketchCrossLanguageTest {
+
+  @Test(groups = {GENERATE_JAVA_FILES})
+  public void generateBinariesForCompatibilityTestingOneString() throws IOException {
+    int[] nArr = {0, 1, 10, 100, 1000, 10_000, 100_000, 1_000_000};
+    for (int n : nArr) {
+      ArrayOfStringsTupleSketch sk = new ArrayOfStringsTupleSketch();
+      for (int i = 0; i < n; i++) {
+        sk.update(new String[] {String.valueOf(i)}, new String[] {"value" + i});
+      }
+      Files.newOutputStream(javaPath.resolve("aos_1_n" + n + "_java.sk")).write(sk.compact().toByteArray());
+    }
+  }
+
+  @Test(groups = {GENERATE_JAVA_FILES})
+  public void generateBinariesForCompatibilityTestingThreeStrings() throws IOException {
+    int[] nArr = {0, 1, 10, 100, 1000, 10_000, 100_000, 1_000_000};
+    for (int n : nArr) {
+      ArrayOfStringsTupleSketch sk = new ArrayOfStringsTupleSketch();
+      for (int i = 0; i < n; i++) {
+        sk.update(new String[] {String.valueOf(i)}, new String[] {"a" + i, "b" + i, "c" + i});
+      }
+      Files.newOutputStream(javaPath.resolve("aos_3_n" + n + "_java.sk")).write(sk.compact().toByteArray());
+    }
+  }
+
+  @Test(groups = {GENERATE_JAVA_FILES})
+  public void generateBinariesForCompatibilityTestingNonEmptyNoEntries() throws IOException {
+    ArrayOfStringsTupleSketch sk = new ArrayOfStringsTupleSketch(12,
+        ResizeFactor.X8, 0.01f);
+    sk.update(new String[] {"key1"}, new String[] {"value1"});
+    assertFalse(sk.isEmpty());
+    assertEquals(sk.getRetainedEntries(), 0);
+    Files.newOutputStream(javaPath.resolve("aos_1_non_empty_no_entries_java.sk")).write(sk.compact().toByteArray());
+  }
+
+  @Test(groups = {GENERATE_JAVA_FILES})
+  public void generateBinariesForCompatibilityTestingMultiKeyStrings() throws IOException {
+    int[] nArr = {0, 1, 10, 100, 1000, 10_000, 100_000, 1_000_000};
+    for (int n : nArr) {
+      ArrayOfStringsTupleSketch sk = new ArrayOfStringsTupleSketch();
+      for (int i = 0; i < n; i++) {
+        sk.update(new String[] {"key" + i, "subkey" + (i % 10)}, new String[] {"value" + i});
+      }
+      Files.newOutputStream(javaPath.resolve("aos_multikey_n" + n + "_java.sk")).write(sk.compact().toByteArray());
+    }
+  }
+
+  @Test(groups = {GENERATE_JAVA_FILES})
+  public void generateBinariesForCompatibilityTestingUnicodeStrings() throws IOException {
+    ArrayOfStringsTupleSketch sk = new ArrayOfStringsTupleSketch();
+
+    sk.update(new String[]{"키", "열쇠"}, new String[]{"밸류", "값"});
+    sk.update(new String[]{"🔑", "🗝️"}, new String[]{"📦", "🎁"});
+    sk.update(new String[]{"ключ1", "ключ2"}, new String[]{"ценить1", "ценить2"});
+
+    assertFalse(sk.isEmpty());
+    assertEquals(sk.getRetainedEntries(), 3);
+
+    Files.newOutputStream(javaPath.resolve("aos_unicode_java.sk")).write(sk.compact().toByteArray());
+  }
+
+  @Test(groups = {GENERATE_JAVA_FILES})
+  public void generateBinariesForCompatibilityTestingEmptyStrings() throws IOException {
+    ArrayOfStringsTupleSketch sk = new ArrayOfStringsTupleSketch();
+
+    sk.update(new String[]{""}, new String[]{"empty_key_value"});
+    sk.update(new String[]{"empty_value_key"}, new String[]{""});
+    sk.update(new String[]{"", ""}, new String[]{"", ""});
+
+    assertFalse(sk.isEmpty());
+    assertEquals(sk.getRetainedEntries(), 3);
+
+    Files.newOutputStream(javaPath.resolve("aos_empty_strings_java.sk")).write(sk.compact().toByteArray());
+  }
+}