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  1. ,
    Expert tip

    You need to add httpcore to your dependencies. Try adding version 4.3 or further.

  2. ,
    Expert tip

    A few things cause this exception:
    1) Check if you have all jars and if they're in the correct path.
    2) Your classpath might be broken, you can define it in the command line with java -cp yourClassPath or at your IDE if you're using one.

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via Stack Overflow by zfollette
, 1 year ago
javafx/embed/swing/JFXPanel
java.lang.NoClassDefFoundError: javafx/embed/swing/JFXPanel at front_end.GUI.initGUI(GUI.java:47) at back_end.Run.main(Run.java:28)Caused by: java.lang.ClassNotFoundException: javafx.embed.swing.JFXPanel at java.net.URLClassLoader$1.run(URLClassLoader.java:372) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:360) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 2 more