diff --git a/Samples/JavaSieve/Sources/JavaSieve/main.swift b/Samples/JavaSieve/Sources/JavaSieve/main.swift
index b06cc6bb..6d262b9f 100644
--- a/Samples/JavaSieve/Sources/JavaSieve/main.swift
+++ b/Samples/JavaSieve/Sources/JavaSieve/main.swift
@@ -15,7 +15,7 @@
 import JavaKit
 import JavaMath
 
-let jvm = try JavaVirtualMachine.shared(classPath: ["QuadraticSieve-1.0.jar"])
+let jvm = try JavaVirtualMachine.shared(classpath: ["QuadraticSieve-1.0.jar"])
 do {
   let sieveClass = try JavaClass<SieveOfEratosthenes>(environment: jvm.environment())
   for prime in sieveClass.findPrimes(100)! {
diff --git a/Samples/JavaSieve/Sources/JavaSieve/swift-java.config b/Samples/JavaSieve/Sources/JavaSieve/swift-java.config
index 61d5cb31..7ef33db9 100644
--- a/Samples/JavaSieve/Sources/JavaSieve/swift-java.config
+++ b/Samples/JavaSieve/Sources/JavaSieve/swift-java.config
@@ -1,5 +1,5 @@
 {
-  "classPath" : "QuadraticSieve-1.0.jar",
+  "classpath" : "QuadraticSieve-1.0.jar",
   "classes" : {
     "com.gazman.quadratic_sieve.QuadraticSieve" : "QuadraticSieve",
     "com.gazman.quadratic_sieve.core.BaseFact" : "BaseFact",
diff --git a/Sources/Java2Swift/JavaToSwift.swift b/Sources/Java2Swift/JavaToSwift.swift
index 072aced2..35bffc74 100644
--- a/Sources/Java2Swift/JavaToSwift.swift
+++ b/Sources/Java2Swift/JavaToSwift.swift
@@ -136,38 +136,38 @@ struct JavaToSwift: ParsableCommand {
 
     // Form a class path from all of our input sources:
     //   * Command-line option --classpath
-    var classPathPieces: [String] = classpath
+    var classpathPieces: [String] = classpath
     switch generationMode {
     case .configuration(jarFile: let jarFile):
       //   * Jar file (in `-jar` mode)
-      classPathPieces.append(jarFile)
+      classpathPieces.append(jarFile)
     case .classWrappers(let config):
       //   * Class path specified in the configuration file (if any)
-      config.classPath.map { classPathPieces.append($0) }
+      config.classpath.map { classpathPieces.append($0) }
     }
 
     //   * Classes paths from all dependent configuration files
     for (_, config) in dependentConfigs {
-      config.classPath.map { classPathPieces.append($0) }
+      config.classpath.map { classpathPieces.append($0) }
     }
 
     // Bring up the Java VM.
-    let jvm = try JavaVirtualMachine.shared(classPath: classPathPieces)
+    let jvm = try JavaVirtualMachine.shared(classpath: classpathPieces)
 
     // Run the generation step.
-    let classPath = classPathPieces.joined(separator: ":")
+    let classpath = classpathPieces.joined(separator: ":")
     switch generationMode {
     case .configuration(jarFile: let jarFile):
       try emitConfiguration(
         forJarFile: jarFile,
-        classPath: classPath,
+        classpath: classpath,
         environment: jvm.environment()
       )
 
     case .classWrappers(let config):
       try generateWrappers(
         config: config,
-        classPath: classPath,
+        classpath: classpath,
         dependentConfigs: dependentConfigs,
         environment: jvm.environment()
       )
@@ -177,7 +177,7 @@ struct JavaToSwift: ParsableCommand {
   /// Generate wrapper
   mutating func generateWrappers(
     config: Configuration,
-    classPath: String,
+    classpath: String,
     dependentConfigs: [(String, Configuration)],
     environment: JNIEnvironment
   ) throws {
@@ -340,10 +340,10 @@ struct JavaToSwift: ParsableCommand {
 
   mutating func emitConfiguration(
     forJarFile jarFileName: String,
-    classPath: String,
+    classpath: String,
     environment: JNIEnvironment
   ) throws {
-    var configuration = Configuration(classPath: classPath)
+    var configuration = Configuration(classpath: classpath)
 
     let jarFile = try JarFile(jarFileName, false, environment: environment)
     for entry in jarFile.entries()! {
diff --git a/Sources/Java2SwiftLib/Configuration.swift b/Sources/Java2SwiftLib/Configuration.swift
index be92dd84..2cda8476 100644
--- a/Sources/Java2SwiftLib/Configuration.swift
+++ b/Sources/Java2SwiftLib/Configuration.swift
@@ -21,7 +21,7 @@ package typealias JavaVersion = Int
 /// must be kept in sync.
 package struct Configuration: Codable {
   /// The Java class path that should be passed along to the Java2Swift tool.
-  package var classPath: String? = nil
+  package var classpath: String? = nil
 
   /// The Java classes that should be translated to Swift. The keys are
   /// canonical Java class names (e.g., java.util.Vector) and the values are
@@ -32,12 +32,12 @@ package struct Configuration: Codable {
   package var targetCompatibility: JavaVersion?
 
   package init(
-    classPath: String? = nil,
+    classpath: String? = nil,
     classes: [String : String] = [:],
     sourceCompatibility: JavaVersion? = nil,
     targetCompatibility: JavaVersion? = nil
   ) {
-    self.classPath = classPath
+    self.classpath = classpath
     self.classes = classes
     self.sourceCompatibility = sourceCompatibility
     self.targetCompatibility = targetCompatibility
diff --git a/Sources/JavaKit/JavaKitVM/JavaVirtualMachine.swift b/Sources/JavaKit/JavaKitVM/JavaVirtualMachine.swift
index 6348dc3c..61f01f51 100644
--- a/Sources/JavaKit/JavaKitVM/JavaVirtualMachine.swift
+++ b/Sources/JavaKit/JavaKitVM/JavaVirtualMachine.swift
@@ -44,7 +44,7 @@ public final class JavaVirtualMachine: @unchecked Sendable {
   /// Initialize a new Java virtual machine instance.
   ///
   /// - Parameters:
-  ///   - classPath: The directories, JAR files, and ZIP files in which the JVM
+  ///   - classpath: The directories, JAR files, and ZIP files in which the JVM
   ///     should look to find classes. This maps to the VM option
   ///     `-Djava.class.path=`.
   ///   - vmOptions: Options that should be passed along to the JVM, which will
@@ -52,7 +52,7 @@ public final class JavaVirtualMachine: @unchecked Sendable {
   ///   - ignoreUnrecognized: Whether the JVM should ignore any VM options it
   ///     does not recognize.
   private init(
-    classPath: [String] = [],
+    classpath: [String] = [],
     vmOptions: [String] = [],
     ignoreUnrecognized: Bool = false
   ) throws {
@@ -64,14 +64,14 @@ public final class JavaVirtualMachine: @unchecked Sendable {
 
     // Construct the complete list of VM options.
     var allVMOptions: [String] = []
-    if !classPath.isEmpty {
+    if !classpath.isEmpty {
       let fileManager = FileManager.default
-      for path in classPath {
+      for path in classpath {
         if !fileManager.fileExists(atPath: path) {
-          throw JavaKitError.classPathEntryNotFound(entry: path, classPath: classPath)
+          throw JavaKitError.classpathEntryNotFound(entry: path, classpath: classpath)
         }
       }
-      let colonSeparatedClassPath = classPath.joined(separator: ":")
+      let colonSeparatedClassPath = classpath.joined(separator: ":")
       allVMOptions.append("-Djava.class.path=\(colonSeparatedClassPath)")
     }
     allVMOptions.append(contentsOf: vmOptions)
@@ -183,7 +183,7 @@ extension JavaVirtualMachine {
   /// calls.
   ///
   /// - Parameters:
-  ///   - classPath: The directories, JAR files, and ZIP files in which the JVM
+  ///   - classpath: The directories, JAR files, and ZIP files in which the JVM
   ///     should look to find classes. This maps to the VM option
   ///     `-Djava.class.path=`.
   ///   - vmOptions: Options that should be passed along to the JVM, which will
@@ -191,7 +191,7 @@ extension JavaVirtualMachine {
   ///   - ignoreUnrecognized: Whether the JVM should ignore any VM options it
   ///     does not recognize.
   public static func shared(
-    classPath: [String] = [],
+    classpath: [String] = [],
     vmOptions: [String] = [],
     ignoreUnrecognized: Bool = false
   ) throws -> JavaVirtualMachine {
@@ -225,7 +225,7 @@ extension JavaVirtualMachine {
           let javaVirtualMachine: JavaVirtualMachine
           do {
             javaVirtualMachine = try JavaVirtualMachine(
-              classPath: classPath,
+              classpath: classpath,
               vmOptions: vmOptions,
               ignoreUnrecognized: ignoreUnrecognized
             )
@@ -289,6 +289,6 @@ extension JavaVirtualMachine {
   }
 
   enum JavaKitError: Error {
-    case classPathEntryNotFound(entry: String, classPath: [String])
+    case classpathEntryNotFound(entry: String, classpath: [String])
   }
 }
diff --git a/USER_GUIDE.md b/USER_GUIDE.md
index e352670e..2abe8ea0 100644
--- a/USER_GUIDE.md
+++ b/USER_GUIDE.md
@@ -111,7 +111,7 @@ The resulting configuration file will look something like this:
 
 ```json
 {
-  "classPath" : "QuadraticSieve-1.0.jar",
+  "classpath" : "QuadraticSieve-1.0.jar",
   "classes" : {
     "com.gazman.quadratic_sieve.QuadraticSieve" : "QuadraticSieve",
     "com.gazman.quadratic_sieve.core.BaseFact" : "BaseFact",
@@ -206,7 +206,7 @@ Putting it all together, we can define a main program in `Sources/JavaSieve/main
 ```swift
 import JavaKit
 
-let jvm = try JavaVirtualMachine.shared(classPath: ["QuadraticSieve-1.0.jar"])
+let jvm = try JavaVirtualMachine.shared(classpath: ["QuadraticSieve-1.0.jar"])
 do {
   let sieveClass = try JavaClass<SieveOfEratosthenes>(environment: jvm.environment())
   for prime in sieveClass.findPrimes(100)! {
@@ -217,7 +217,7 @@ do {
 }
 ```
 
-Note that we are passing the Jar file in the `classPath` argument when initializing the `JavaVirtualMachine` instance. Otherwise, the program will fail with an error because it cannot find the Java class `com.gazman.quadratic_sieve.primes.SieveOfEratosthenes`.
+Note that we are passing the Jar file in the `classpath` argument when initializing the `JavaVirtualMachine` instance. Otherwise, the program will fail with an error because it cannot find the Java class `com.gazman.quadratic_sieve.primes.SieveOfEratosthenes`.
 
 ### Downcasting