🦄 refactor: Convert to kotlin for android

android/app/build.gradle.kts

@@ -36,7 +36,8 @@ dependencies {
     implementation("androidx.constraintlayout:constraintlayout:2.1.4")
     implementation("com.caoccao.javet:javet-android:3.0.2")
 //    implementation(fileTree(mapOf("dir" to "libs", "include" to listOf("*.aar"))))
-    testImplementation("junit:junit:4.13.2")
+    testImplementation("junit:junit:5.10.1")
+    testImplementation("org.jetbrains.kotlin:kotlin-test:1.9.21")
     androidTestImplementation("androidx.test.ext:junit:1.1.5")
     androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
 

android/app/src/androidTest/java/com/caoccao/javet/shell/ExampleInstrumentedTest.java → android/app/src/androidTest/java/com/caoccao/javet/shell/ExampleInstrumentedTest.kt

@@ -13,30 +13,25 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+package com.caoccao.javet.shell
 
-package com.caoccao.javet.shell;
-
-import android.content.Context;
-
-import androidx.test.platform.app.InstrumentationRegistry;
-import androidx.test.ext.junit.runners.AndroidJUnit4;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import static org.junit.Assert.*;
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert
+import org.junit.Test
+import org.junit.runner.RunWith
 
 /**
  * Instrumented test, which will execute on an Android device.
  *
- * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ * @see [Testing documentation](http://d.android.com/tools/testing)
  */
-@RunWith(AndroidJUnit4.class)
-public class ExampleInstrumentedTest {
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
     @Test
-    public void useAppContext() {
+    fun useAppContext() {
         // Context of the app under test.
-        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
-        assertEquals("com.caoccao.javet.shell", appContext.getPackageName());
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        Assert.assertEquals("com.caoccao.javet.shell", appContext.packageName)
     }
 }

android/app/src/main/java/com/caoccao/javet/shell/MainActivity.kt

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2023. caoccao.com Sam Cao
+ *
+ * Licensed 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 com.caoccao.javet.shell
+
+import android.os.Bundle
+import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+import com.caoccao.javet.exceptions.JavetException
+import com.caoccao.javet.interop.V8Host
+import com.caoccao.javet.interop.V8Runtime
+import com.caoccao.javet.interop.loader.JavetLibLoader
+import com.caoccao.javet.utils.JavetOSUtils
+
+class MainActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        val textView = findViewById<TextView>(R.id.textView)
+        val sb = StringBuilder()
+        sb.append("Javet is Java + V8 (JAVa + V + EighT). It is an awesome way of embedding Node.js and V8 in Java.\n\n")
+        sb.append("Javet v").append(JavetLibLoader.LIB_VERSION).append(" supports Android (arm, arm64, x86 and x86_64) ABI >= 24.\n\n")
+        try {
+            V8Host.getV8Instance().createV8Runtime<V8Runtime>().use { v8Runtime ->
+                sb.append(v8Runtime.getExecutor("'Hello Javet'").executeString()).append("\n")
+                sb.append("OS Name = ").append(JavetOSUtils.OS_NAME).append("\n")
+                sb.append("OS Arch = ").append(JavetOSUtils.OS_ARCH).append("\n")
+                sb.append("V8 = ").append(v8Runtime.version).append("\n")
+                sb.append("Now = ").append(v8Runtime.getExecutor("new Date()").executeZonedDateTime()).append("\n")
+            }
+        } catch (e: JavetException) {
+            sb.append(e.message).append("\n")
+            sb.append("Error Code = ").append(e.error.code).append("\n")
+            if (e.cause != null) {
+                sb.append(e.cause!!.message).append("\n")
+            }
+        }
+        textView.text = sb.toString()
+    }
+}

android/app/src/test/java/com/caoccao/javet/shell/ExampleUnitTest.java → android/app/src/test/java/com/caoccao/javet/shell/ExampleUnitTest.kt

@@ -13,21 +13,19 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+package com.caoccao.javet.shell
 
-package com.caoccao.javet.shell;
-
-import org.junit.Test;
-
-import static org.junit.Assert.*;
+import org.junit.Assert
+import org.junit.Test
 
 /**
  * Example local unit test, which will execute on the development machine (host).
  *
- * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ * @see [Testing documentation](http://d.android.com/tools/testing)
  */
-public class ExampleUnitTest {
+class ExampleUnitTest {
     @Test
-    public void addition_isCorrect() {
-        assertEquals(4, 2 + 2);
+    fun addition_isCorrect() {
+        Assert.assertEquals(4, (2 + 2).toLong())
     }
 }

console/build.gradle.kts

@@ -28,7 +28,7 @@ version = "0.1.0"
 
 dependencies {
     implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.8.10")
-    implementation("com.caoccao.javet:javet:3.0.1")
+    implementation("com.caoccao.javet:javet:3.0.2")
 
     // https://github.com/Kotlin/kotlinx-cli
     // https://mvnrepository.com/artifact/org.jetbrains.kotlinx/kotlinx-cli-jvm