JavaBad

Due to the launcher's reliance on the com.sun.awt.AWTUtilities which has been removed in Java 11, it does not function with newer versions of Java. While this is fine for most users under Windows, it can be problematic for users under Linux as some distros do not offer older JREs as a package, forcing the user to compile the JDK from source to run the launcher. In modern versions of Java, all of the aforementioned class's functionality is provided by other APIs, so it would make sense to migrate. See the Oracle and OpenJDK bugs for more details. https://bugs.java.com/bugdatabase/view_bug.do?bug_id=JDK-8200149 https://bugs.openjdk.java.net/browse/JDK-8200149 PS C:\Users\User> java -version java version "12.0.1" 2019-04-16 Java(TM) SE Runtime Environment (build 12.0.1+12) Java HotSpot(TM) 64-Bit Server VM (build 12.0.1+12, mixed mode, sharing) [B#407] 2019/06/01 10:57:54 [INFO] Launching command: 'C:\Program Files\Java\jdk-12.0.1\bin\javaw.exe -Xmx256m -verbose -Djava.net.preferIPv4Stack=true -Dawt.useSystemAAFontSettings=lcd -Dswing.aatext=true -cp /C:/Users/User/Downloads/TechnicLauncher.jar net.technicpack.launcher.LauncherMain ' [B#407] 2019/06/01 10:57:56 [INFO] Console Mode Activated [B#407] 2019/06/01 10:57:56 [SEVERE] java.lang.NoClassDefFoundError: com/sun/awt/AWTUtilities [B#407] 2019/06/01 10:57:56 [SEVERE] at net.technicpack.ui.controls.installation.SplashScreen.<init>(SplashScreen.java:84) [B#407] 2019/06/01 10:57:56 [SEVERE] at net.technicpack.launcher.autoupdate.TechnicRelauncher.buildUpdaterTasks(TechnicRelauncher.java:108) [B#407] 2019/06/01 10:57:56 [SEVERE] at net.technicpack.autoupdate.Relauncher.runAutoUpdater(Relauncher.java:97) [B#407] 2019/06/01 10:57:56 [SEVERE] at net.technicpack.launcher.LauncherMain.main(LauncherMain.java:198) [B#407] 2019/06/01 10:57:56 [SEVERE] Caused by: java.lang.ClassNotFoundException: com.sun.awt.AWTUtilities [B#407] 2019/06/01 10:57:56 [SEVERE] at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583) [B#407] 2019/06/01 10:57:56 [SEVERE] at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) [B#407] 2019/06/01 10:57:56 [SEVERE] at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) [B#407] 2019/06/01 10:57:56 [SEVERE] ... 4 more [B#407] 2019/06/01 10:57:56 [SEVERE] Unhandled Exception in Thread[main,5,main] java.lang.NoClassDefFoundError: com/sun/awt/AWTUtilities at net.technicpack.ui.controls.installation.SplashScreen.<init>(SplashScreen.java:84) at net.technicpack.launcher.autoupdate.TechnicRelauncher.buildUpdaterTasks(TechnicRelauncher.java:108) at net.technicpack.autoupdate.Relauncher.runAutoUpdater(Relauncher.java:97) at net.technicpack.launcher.LauncherMain.main(LauncherMain.java:198) Caused by: java.lang.ClassNotFoundException: com.sun.awt.AWTUtilities at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ... 4 more