Updated lwjgl backend version

pom.xml

@@ -14,8 +14,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>1.7</maven.compiler.source>
-    <maven.compiler.target>1.7</maven.compiler.target>
+    <maven.compiler.release>9</maven.compiler.release>
   </properties>
 
   <dependencies>
@@ -28,15 +27,15 @@
 
     <dependency>
       <groupId>com.badlogicgames.gdx</groupId>
-      <artifactId>gdx-backend-lwjgl</artifactId>
+      <artifactId>gdx-platform</artifactId>
       <version>1.9.10</version>
+      <classifier>natives-desktop</classifier>
     </dependency>
 
     <dependency>
       <groupId>com.badlogicgames.gdx</groupId>
-      <artifactId>gdx-platform</artifactId>
+      <artifactId>gdx-backend-lwjgl3</artifactId>
       <version>1.9.10</version>
-      <classifier>natives-desktop</classifier>
     </dependency>
 
     <dependency>

src/main/java/inf112/skeleton/app/Main.java

 package inf112.skeleton.app;
 
-import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
-import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
-
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3Application;
+import com.badlogic.gdx.backends.lwjgl3.Lwjgl3ApplicationConfiguration;
 
 public class Main {
     public static void main(String[] args) {
-        LwjglApplicationConfiguration cfg = new LwjglApplicationConfiguration();
-        cfg.title = "hello-world";
-        cfg.width = 480;
-        cfg.height = 320;
+        Lwjgl3ApplicationConfiguration cfg = new Lwjgl3ApplicationConfiguration();
+        cfg.setTitle("hello-world");
+        cfg.setWindowedMode(480, 320);
 
-        new LwjglApplication(new HelloWorld(), cfg);
+        new Lwjgl3Application(new HelloWorld(), cfg);
     }
 }
\ No newline at end of file

src/test/java/inf112/skeleton/app/AppTest.java

@@ -6,14 +6,12 @@ import org.junit.Test;
 /**
  * Unit test for simple App.
  */
-public class AppTest 
-{
+public class AppTest {
     /**
      * Rigorous Test :-)
      */
     @Test
-    public void shouldAnswerWithTrue()
-    {
-        assertTrue( true );
+    public void shouldAnswerWithTrue() {
+        assertTrue(true);
     }
 }