Update idiomatic notebook for Paris JUG and add Hello class with message handling

Author: yostane

material/conferences/2024-11-12-paris-jug/idiomatic-01.ipynb

@@ -5,22 +5,18 @@
    "cell_type": "markdown",
    "source": [
     "# Idiomatic Kotlin @ Paris JUG\n",
-    "Date: 2024 / 10 / 12"
+    "Date: 2024 / 11 / 12"
    ]
   },
   {
-   "cell_type": "code",
    "metadata": {
     "collapsed": true,
     "ExecuteTime": {
-     "end_time": "2024-10-25T14:33:51.646533Z",
-     "start_time": "2024-10-25T14:33:51.606114Z"
+     "end_time": "2024-11-12T08:46:52.080221800Z",
+     "start_time": "2024-11-12T08:46:51.711403Z"
     }
    },
-   "source": [
-    "val event = \"Paris JUG\"\n",
-    "println(\"Hello $event\") // String template"
-   ],
+   "cell_type": "code",
    "outputs": [
     {
      "name": "stdout",
@@ -30,24 +26,20 @@
      ]
     }
    ],
-   "execution_count": 17
+   "execution_count": 1,
+   "source": [
+    "val event = \"Paris JUG\"\n",
+    "println(\"Hello $event\") // String template"
+   ]
   },
   {
    "metadata": {
     "ExecuteTime": {
-     "end_time": "2024-10-25T14:33:51.733128900Z",
-     "start_time": "2024-10-25T14:33:51.666925500Z"
+     "end_time": "2024-11-12T08:46:52.606006400Z",
+     "start_time": "2024-11-12T08:46:52.182420600Z"
     }
    },
    "cell_type": "code",
-   "source": [
-    "// Extension function: add a function to a class without inhetitance\n",
-    "fun String.randomCase(): String {\n",
-    "    // If expression\n",
-    "    return if (Math.random() > 0.5) uppercase() else lowercase()\n",
-    "}\n",
-    "println(event.randomCase())"
-   ],
    "outputs": [
     {
      "name": "stdout",
@@ -57,13 +49,21 @@
      ]
     }
    ],
-   "execution_count": 18
+   "execution_count": 2,
+   "source": [
+    "// Extension function: add a function to a class without inhetitance\n",
+    "fun String.randomCase(): String {\n",
+    "    // If expression\n",
+    "    return if (Math.random() > 0.5) uppercase() else lowercase()\n",
+    "}\n",
+    "println(event.randomCase())"
+   ]
   },
   {
    "metadata": {
     "ExecuteTime": {
-     "end_time": "2024-10-25T14:33:51.861854200Z",
-     "start_time": "2024-10-25T14:33:51.755062200Z"
+     "end_time": "2024-11-12T20:11:18.362206600Z",
+     "start_time": "2024-11-12T20:11:18.090413800Z"
     }
    },
    "cell_type": "code",
@@ -75,8 +75,9 @@
     "// Argument labels\n",
     "println(event.randomCaseChance(offset = 3))\n",
     "println(event.randomCaseChance(\n",
-    "    chance = 0.9,\n",
+    "    \n",
     "    offset = 2,\n",
+    "    chance = 0.9,\n",
     "    )\n",
     ")"
    ],
@@ -90,13 +91,13 @@
      ]
     }
    ],
-   "execution_count": 19
+   "execution_count": 10
   },
   {
    "metadata": {
     "ExecuteTime": {
-     "end_time": "2024-10-25T14:33:52.069576Z",
-     "start_time": "2024-10-25T14:33:51.987387600Z"
+     "end_time": "2024-11-12T08:46:53.633203200Z",
+     "start_time": "2024-11-12T08:46:53.337385800Z"
     }
    },
    "cell_type": "code",
@@ -118,13 +119,13 @@
      ]
     }
    ],
-   "execution_count": 20
+   "execution_count": 4
   },
   {
    "metadata": {
     "ExecuteTime": {
-     "end_time": "2024-10-25T14:33:52.233616600Z",
-     "start_time": "2024-10-25T14:33:52.158182800Z"
+     "end_time": "2024-11-12T08:46:53.984086300Z",
+     "start_time": "2024-11-12T08:46:53.673347200Z"
     }
    },
    "cell_type": "code",
@@ -145,13 +146,13 @@
      ]
     }
    ],
-   "execution_count": 21
+   "execution_count": 5
   },
   {
    "metadata": {
     "ExecuteTime": {
-     "end_time": "2024-10-25T14:40:24.001881Z",
-     "start_time": "2024-10-25T14:40:23.881908900Z"
+     "end_time": "2024-11-12T08:46:54.593211500Z",
+     "start_time": "2024-11-12T08:46:54.027803300Z"
     }
    },
    "cell_type": "code",
@@ -170,18 +171,18 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "P, a, r, I, S,  , J, u, g\r\n",
+      "p, A, R, i, S,  , j, u, G\r\n",
       "[P/2, a/0, r/2, i/4]\r\n"
      ]
     }
    ],
-   "execution_count": 24
+   "execution_count": 6
   },
   {
    "metadata": {
     "ExecuteTime": {
-     "end_time": "2024-10-25T14:50:19.815828200Z",
-     "start_time": "2024-10-25T14:50:19.702384500Z"
+     "end_time": "2024-11-12T08:46:55.067201900Z",
+     "start_time": "2024-11-12T08:46:54.610120800Z"
     }
    },
    "cell_type": "code",
@@ -212,7 +213,7 @@
      ]
     }
    ],
-   "execution_count": 27
+   "execution_count": 7
   }
  ],
  "metadata": {

material/conferences/2024-11-12-paris-jug/javafxdemo/app/src/main/java/org/example/Hello.java

@@ -0,0 +1,19 @@
+package javafxdemo.app.src.main.java.org.example;
+
+public class Hello {
+    // In Kotlin -> (message: String)
+    public void sayHelloNonNull(@Nonnull String message) {
+        System.out.println(message);
+    }
+
+    // In Kotlin -> (message: String?)
+    public void sayHelloNullable(@Nullable String message) {
+        System.out.println(message != null ? message.toUpperCase() : "null");
+    }
+
+    // In Kotlin -> (message: String!) (! means that message can be String? or String)
+    public void sayHello(String message) {
+        System.out.println(message);
+    }
+}
+

material/conferences/2024-11-12-paris-jug/javafxdemo/app/src/main/kotlin/org/example/App.kt

@@ -1,15 +1,18 @@
 package org.example
 
 import javafx.application.Application
-import javafx.geometry.HPos
 import javafx.stage.Stage
 import ktfx.coroutines.onAction
-import ktfx.dialogs.infoAlert
 import ktfx.launchApplication
 import ktfx.layouts.*
 
 class App : Application() {
+
     override fun start(stage: Stage) {
+        val hello = Hello()
+        hello.sayHello(null) // message: String!
+        hello.sayHelloNullable("hello") // message: String?
+        hello.sayHelloNonNull("message") // message: String
         stage.scene {
             gridPane {
                 hgap = 10.0
@@ -25,6 +28,7 @@ class App : Application() {
             stage.show()
         }
     }
+
     companion object {
         @JvmStatic
         fun main(vararg args: String) = launchApplication<App>(*args)