Kotlin and gradle version has been updated. Please use it.

.idea/gradle.xml

@@ -13,7 +13,6 @@
             <option value="$PROJECT_DIR$/app" />
             <option value="$PROJECT_DIR$/buildSrc" />
             <option value="$PROJECT_DIR$/console" />
-            <option value="$PROJECT_DIR$/list" />
             <option value="$PROJECT_DIR$/utilities" />
           </set>
         </option>

.idea/kotlinc.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.6.21" />
+    <option name="version" value="1.6.20" />
   </component>
 </project>
\ No newline at end of file

app/build.gradle

@@ -4,9 +4,14 @@
 
 plugins {
     id 'notes.multi.kotlin-application-conventions'
+    id 'notes.multi.kotlin-library-conventions'
+    id 'application'
+    id 'org.jetbrains.kotlin.jvm'
+    id 'org.openjfx.javafxplugin' version '0.0.13'
 }
 
 dependencies {
+    implementation group: 'org.fxmisc.richtext', name: 'richtextfx', version: '0.11.0'
     implementation 'org.apache.commons:commons-text'
     implementation project(':utilities')
     testImplementation 'org.jetbrains.kotlin:kotlin-test'
@@ -17,6 +22,11 @@ application {
     mainClass = 'notes.multi.app.AppKt'
 }
 
+javafx {
+    version = '18.0.2'
+    modules = ['javafx.controls', 'javafx.graphics', 'javafx.web']
+}
+
 test {
     useJUnitPlatform()
 }

app/src/main/kotlin/notes/multi/app/App.kt

@@ -3,12 +3,5 @@
  */
 package notes.multi.app
 
-import notes.multi.utilities.StringUtils
-
-import org.apache.commons.text.WordUtils
-
 fun main() {
-    val tokens = StringUtils.split(MessageUtils.getMessage())
-    val result = StringUtils.join(tokens)
-    println(WordUtils.capitalize(result))
 }

buildSrc/build.gradle

@@ -14,5 +14,5 @@ repositories {
 }
 
 dependencies {
-    implementation 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.31'
+    implementation 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.20'
 }

gradle/wrapper/gradle-wrapper.properties

 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

list/build.gradle

-/*
- * This file was generated by the Gradle 'init' task.
- */
-
-plugins {
-    id 'notes.multi.kotlin-library-conventions'
-}

list/src/main/kotlin/notes/multi/list/LinkedList.kt

-/*
- * This Kotlin source file was generated by the Gradle 'init' task.
- */
-package notes.multi.list
-
-class LinkedList {
-    private var head: Node? = null
-
-    fun add(element: String) {
-        val newNode = Node(element)
-
-        val it = tail(head)
-        if (it == null) {
-            head = newNode
-        } else {
-            it.next = newNode
-        }
-    }
-
-    private fun tail(head: Node?): Node? {
-        var it: Node?
-
-        it = head
-        while (it?.next != null) {
-            it = it.next
-        }
-
-        return it
-    }
-
-    fun remove(element: String): Boolean {
-        var result = false
-        var previousIt: Node? = null
-        var it: Node? = head
-        while (!result && it != null) {
-            if (0 == element.compareTo(it.data)) {
-                result = true
-                unlink(previousIt, it)
-                break
-            }
-            previousIt = it
-            it = it.next
-        }
-
-        return result
-    }
-
-    private fun unlink(previousIt: Node?, currentIt: Node) {
-        if (currentIt == head) {
-            head = currentIt.next
-        } else {
-            previousIt?.next = currentIt.next
-        }
-    }
-
-    fun size(): Int {
-        var size = 0
-
-        var it = head
-        while (it != null) {
-            ++size
-            it = it.next
-        }
-
-        return size
-    }
-
-    fun get(idx: Int): String {
-        var index = idx
-        var it = head
-        while (index > 0 && it != null) {
-            it = it.next
-            index--
-        }
-
-        if (it == null) {
-            throw IndexOutOfBoundsException("Index is out of range")
-        }
-
-        return it.data
-    }
-
-    private data class Node(val data: String) {
-        var next: Node? = null
-    }
-}

list/src/test/kotlin/notes/multi/list/LinkedListTest.kt

-/*
- * This Kotlin source file was generated by the Gradle "init" task.
- */
-package notes.multi.list
-
-import org.junit.jupiter.api.Test
-
-import org.junit.jupiter.api.Assertions.*
-
-class LinkedListTest {
-    @Test fun testConstructor() {
-        val list = LinkedList()
-        assertEquals(0, list.size())
-    }
-
-    @Test fun testAdd() {
-        val list = LinkedList()
-
-        list.add("one")
-        assertEquals(1, list.size())
-        assertEquals("one", list.get(0))
-
-        list.add("two")
-        assertEquals(2, list.size())
-        assertEquals("two", list.get(1))
-    }
-
-    @Test fun testRemove() {
-        val list = LinkedList()
-
-        list.add("one")
-        list.add("two")
-        assertTrue(list.remove("one"))
-
-        assertEquals(1, list.size())
-        assertEquals("two", list.get(0))
-
-        assertTrue(list.remove("two"))
-        assertEquals(0, list.size())
-    }
-
-    @Test fun testRemoveMissing() {
-        val list = LinkedList()
-
-        list.add("one")
-        list.add("two")
-        assertFalse(list.remove("three"))
-        assertEquals(2, list.size())
-    }
-}

settings.gradle

@@ -8,4 +8,4 @@
  */
 
 rootProject.name = 'notes-multi'
-include('app', 'list', 'utilities', 'console')
+include('app', 'utilities', 'console')

utilities/build.gradle

@@ -15,7 +15,6 @@ javafx {
 }
 
 dependencies {
-    api project(':list')
     testImplementation 'org.jetbrains.kotlin:kotlin-test'
 }
 

utilities/src/main/kotlin/notes/multi/utilities/JoinUtils.kt

-/*
- * This Kotlin source file was generated by the Gradle 'init' task.
- */
-package notes.multi.utilities
-
-import notes.multi.list.LinkedList
-
-class JoinUtils {
-    companion object {
-        fun join(source: LinkedList): String {
-            val result = StringBuilder()
-            for (i in 0 until source.size()) {
-                if (result.isNotEmpty()) {
-                    result.append(" ")
-                }
-                result.append(source.get(i))
-            }
-
-            return result.toString()
-        }
-    }
-}

utilities/src/main/kotlin/notes/multi/utilities/SplitUtils.kt

-/*
- * This Kotlin source file was generated by the Gradle 'init' task.
- */
-package notes.multi.utilities
-
-import notes.multi.list.LinkedList
-
-class SplitUtils {
-    companion object {
-        fun split(source: String): LinkedList {
-            var lastFind = 0
-            val result = LinkedList()
-
-            var currentFind = source.indexOf(" ", lastFind)
-            while (currentFind != -1) {
-                var token = source.substring(lastFind)
-                if (currentFind != -1) {
-                    token = token.substring(0, currentFind - lastFind)
-                }
-
-                addIfValid(token, result)
-                lastFind = currentFind + 1
-                currentFind = source.indexOf(" ", lastFind)
-            }
-
-            val token = source.substring(lastFind)
-            addIfValid(token, result)
-
-            return result
-        }
-
-        private fun addIfValid(token: String, list: LinkedList) {
-            if (isTokenValid(token)) {
-                list.add(token)
-            }
-        }
-
-        private fun isTokenValid(token: String): Boolean {
-            return token.isNotEmpty()
-        }
-    }
-}

utilities/src/main/kotlin/notes/multi/utilities/StringUtils.kt

-/*
- * This Kotlin source file was generated by the Gradle 'init' task.
- */
-package notes.multi.utilities
-
-import notes.multi.list.LinkedList
-
-class StringUtils {
-    companion object {
-        fun join(source: LinkedList): String {
-            return JoinUtils.join(source)
-        }
-
-        fun split(source: String): LinkedList {
-            return SplitUtils.split(source)
-        }
-    }
-}