diff --git a/src/common/pom.xml b/src/common/pom.xml
index 85865a4..61cfe2f 100644
--- a/src/common/pom.xml
+++ b/src/common/pom.xml
@@ -60,18 +60,6 @@
                         </configuration>
                     </execution>
                 </executions>
-                <configuration>
-                    <compilerPlugins>
-                        <plugin>kotlinx-serialization</plugin>
-                    </compilerPlugins>
-                </configuration>
-                <dependencies>
-                    <dependency>
-                        <groupId>org.jetbrains.kotlin</groupId>
-                        <artifactId>kotlin-maven-serialization</artifactId>
-                        <version>${kotlin.version}</version>
-                    </dependency>
-                </dependencies>
             </plugin>
             <plugin>
                 <artifactId>maven-surefire-plugin</artifactId>
diff --git a/src/java/pom.xml b/src/java/pom.xml
index 0ca3107..55e441b 100644
--- a/src/java/pom.xml
+++ b/src/java/pom.xml
@@ -48,7 +48,6 @@
 
     <build>
         <sourceDirectory>src/main/kotlin</sourceDirectory>
-        <testSourceDirectory>src/test/kotlin</testSourceDirectory>
         <plugins>
             <plugin>
                 <groupId>org.jetbrains.kotlin</groupId>
@@ -69,7 +68,7 @@
                     </execution>
                     <execution>
                         <id>test-compile</id>
-                        <phase>test-compile</phase>
+                        <phase>process-test-sources</phase>
                         <goals>
                             <goal>test-compile</goal>
                         </goals>
diff --git a/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/common/Count.java b/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/common/Count.java
deleted file mode 100644
index 4ffc4ce..0000000
--- a/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/common/Count.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package solutions.bitbadger.documents.java.java.integration.common;
-
-import solutions.bitbadger.documents.java.integration.ThrowawayDatabase;
-import solutions.bitbadger.documents.java.java.testDocs.JsonDocument;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static solutions.bitbadger.documents.java.integration.TypesKt.TEST_TABLE;
-
-final public class Count {
-
-    public static void all(ThrowawayDatabase db) {
-        JsonDocument.load(db);
-        assertEquals(5L, solutions.bitbadger.documents.java.Count.all(TEST_TABLE, db.getConn()),
-                "There should have been 5 documents in the table");
-    }
-
-
-    private Count() {
-    }
-}
diff --git a/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/common/CountFunctions.java b/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/common/CountFunctions.java
new file mode 100644
index 0000000..4556020
--- /dev/null
+++ b/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/common/CountFunctions.java
@@ -0,0 +1,62 @@
+package solutions.bitbadger.documents.java.java.integration.common;
+
+import solutions.bitbadger.documents.common.Field;
+import solutions.bitbadger.documents.java.Count;
+import solutions.bitbadger.documents.java.integration.ThrowawayDatabase;
+import solutions.bitbadger.documents.java.java.testDocs.JsonDocument;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static solutions.bitbadger.documents.java.integration.TypesKt.TEST_TABLE;
+
+/**
+ * Integration tests for the `Count` object
+ */
+final public class CountFunctions {
+
+    public static void all(ThrowawayDatabase db) {
+        JsonDocument.load(db);
+        assertEquals(5L, Count.all(TEST_TABLE, db.getConn()), "There should have been 5 documents in the table");
+    }
+
+    public static void byFieldsNumeric(ThrowawayDatabase db) {
+        JsonDocument.load(db);
+        assertEquals(3L, Count.byFields(TEST_TABLE, List.of(Field.between("numValue", 10, 20)), db.getConn()),
+                "There should have been 3 matching documents");
+    }
+
+    public static void byFieldsAlpha(ThrowawayDatabase db) {
+        JsonDocument.load(db);
+        assertEquals(1L, Count.byFields(TEST_TABLE, List.of(Field.between("value", "aardvark", "apple")), db.getConn()),
+                "There should have been 1 matching document");
+    }
+
+    public static void byContainsMatch(ThrowawayDatabase db) {
+        JsonDocument.load(db);
+        assertEquals(2L, Count.byContains(TEST_TABLE, Map.of("value", "purple"), db.getConn()),
+                "There should have been 2 matching documents");
+    }
+
+    public static void byContainsNoMatch(ThrowawayDatabase db) {
+        JsonDocument.load(db);
+        assertEquals(0L, Count.byContains(TEST_TABLE, Map.of("value", "magenta"), db.getConn()),
+                "There should have been no matching documents");
+    }
+
+    public static void byJsonPathMatch(ThrowawayDatabase db) {
+        JsonDocument.load(db);
+        assertEquals(2L, Count.byJsonPath(TEST_TABLE, "$.numValue ? (@ < 5)", db.getConn()),
+                "There should have been 2 matching documents");
+    }
+
+    public static void byJsonPathNoMatch(ThrowawayDatabase db) {
+        JsonDocument.load(db);
+        assertEquals(0L, Count.byJsonPath(TEST_TABLE, "$.numValue ? (@ > 100)", db.getConn()),
+                "There should have been no matching documents");
+    }
+
+    private CountFunctions() {
+    }
+}
diff --git a/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/postgresql/CountIT.java b/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/postgresql/CountIT.java
index 525aee5..54871dc 100644
--- a/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/postgresql/CountIT.java
+++ b/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/postgresql/CountIT.java
@@ -3,20 +3,67 @@ package solutions.bitbadger.documents.java.java.integration.postgresql;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import solutions.bitbadger.documents.java.integration.postgresql.PgDB;
-import solutions.bitbadger.documents.java.java.integration.common.Count;
+import solutions.bitbadger.documents.java.java.integration.common.CountFunctions;
 
 /**
  * PostgreSQL integration tests for the `Count` object / `count*` connection extension functions
  */
-@DisplayName("Java | PostgreSQL: Count")
+@DisplayName("Java | Java | PostgreSQL: Count")
 public class CountIT {
 
     @Test
     @DisplayName("all counts all documents")
     public void all() {
         try (PgDB db = new PgDB()) {
-            Count.all(db);
+            CountFunctions.all(db);
         }
     }
 
+    @Test
+    @DisplayName("byFields counts documents by a numeric value")
+    public void byFieldsNumeric() {
+        try (PgDB db = new PgDB()) {
+            CountFunctions.byFieldsNumeric(db);
+        }
+    }
+
+    @Test
+    @DisplayName("byFields counts documents by a alphanumeric value")
+    public void byFieldsAlpha() {
+        try (PgDB db = new PgDB()) {
+            CountFunctions.byFieldsAlpha(db);
+        }
+    }
+
+    @Test
+    @DisplayName("byContains counts documents when matches are found")
+    public void byContainsMatch() {
+        try (PgDB db = new PgDB()) {
+            CountFunctions.byContainsMatch(db);
+        }
+    }
+
+    @Test
+    @DisplayName("byContains counts documents when no matches are found")
+    public void byContainsNoMatch() {
+        try (PgDB db = new PgDB()) {
+            CountFunctions.byContainsNoMatch(db);
+        }
+    }
+
+    @Test
+    @DisplayName("byJsonPath counts documents when matches are found")
+    public void byJsonPathMatch() {
+        try (PgDB db = new PgDB()) {
+            CountFunctions.byJsonPathMatch(db);
+        }
+    }
+
+    @Test
+    @DisplayName("byJsonPath counts documents when no matches are found")
+    public void byJsonPathNoMatch() {
+        try (PgDB db = new PgDB()) {
+            CountFunctions.byJsonPathNoMatch(db);
+        }
+    }
 }
diff --git a/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/sqlite/CountIT.java b/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/sqlite/CountIT.java
new file mode 100644
index 0000000..ec59271
--- /dev/null
+++ b/src/java/src/test/java/solutions/bitbadger/documents/java/java/integration/sqlite/CountIT.java
@@ -0,0 +1,56 @@
+package solutions.bitbadger.documents.java.java.integration.sqlite;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import solutions.bitbadger.documents.common.DocumentException;
+import solutions.bitbadger.documents.java.integration.sqlite.SQLiteDB;
+import solutions.bitbadger.documents.java.java.integration.common.CountFunctions;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+/**
+ * SQLite integration tests for the `Count` object / `count*` connection extension functions
+ */
+@DisplayName("Java | Java | SQLite: Count")
+public class CountIT {
+
+    @Test
+    @DisplayName("all counts all documents")
+    public void all() {
+        try (SQLiteDB db = new SQLiteDB()) {
+            CountFunctions.all(db);
+        }
+    }
+
+    @Test
+    @DisplayName("byFields counts documents by a numeric value")
+    public void byFieldsNumeric() {
+        try (SQLiteDB db = new SQLiteDB()) {
+            CountFunctions.byFieldsNumeric(db);
+        }
+    }
+
+    @Test
+    @DisplayName("byFields counts documents by a alphanumeric value")
+    public void byFieldsAlpha() {
+        try (SQLiteDB db = new SQLiteDB()) {
+            CountFunctions.byFieldsAlpha(db);
+        }
+    }
+
+    @Test
+    @DisplayName("byContains fails")
+    public void byContainsMatch() {
+        try (SQLiteDB db = new SQLiteDB()) {
+            assertThrows(DocumentException.class, () -> CountFunctions.byContainsMatch(db));
+        }
+    }
+
+    @Test
+    @DisplayName("byJsonPath fails")
+    public void byJsonPathMatch() {
+        try (SQLiteDB db = new SQLiteDB()) {
+            assertThrows(DocumentException.class, () -> CountFunctions.byJsonPathMatch(db));
+        }
+    }
+}
diff --git a/src/pom.xml b/src/pom.xml
index 544ca00..fa7686e 100644
--- a/src/pom.xml
+++ b/src/pom.xml
@@ -40,7 +40,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <kotlin.code.style>official</kotlin.code.style>
         <kotlin.compiler.jvmTarget>${java.version}</kotlin.compiler.jvmTarget>
-        <kotlin.version>2.1.0</kotlin.version>
+        <kotlin.version>2.1.10</kotlin.version>
         <serialization.version>1.8.0</serialization.version>
     </properties>