fever@ferris ~/Desktop/jgrasp$ java -jar jgrasp.jar
You are running jGRASP under a version of Java from an unsupported vendor. It may fail to start due to incompatibilities or bugs in that Java implementation.

If you encounter problems, we recommend that you install Oracle's Java, or if it is already installed, modify your system PATH so that it comes first.

Exception in thread "AWT-EventQueue-0" java.lang.InternalError: java.lang.reflect.InvocationTargetException
        at java.desktop/sun.font.FontManagerFactory$1.run(Unknown Source)
        at java.base/java.security.AccessController.doPrivileged(Unknown Source)
        at java.desktop/sun.font.FontManagerFactory.getInstance(Unknown Source)
        at java.desktop/sun.font.SunFontManager.getInstance(Unknown Source)
        at java.desktop/sun.font.FontDesignMetrics.getMetrics(Unknown Source)
        at java.desktop/sun.swing.SwingUtilities2.getFontMetrics(Unknown Source)
        at java.desktop/javax.swing.JComponent.getFontMetrics(Unknown Source)
        at java.desktop/javax.swing.text.PlainView.calculateLongestLine(Unknown Source)
        at java.desktop/javax.swing.text.PlainView.updateMetrics(Unknown Source)
        at java.desktop/javax.swing.text.PlainView.updateDamage(Unknown Source)
        at java.desktop/javax.swing.text.PlainView.insertUpdate(Unknown Source)
        at java.desktop/javax.swing.plaf.basic.BasicTextUI$RootView.insertUpdate(Unknown Source)
        at java.desktop/javax.swing.plaf.basic.BasicTextUI$UpdateHandler.insertUpdate(Unknown Source)
        at java.desktop/javax.swing.text.AbstractDocument.fireInsertUpdate(Unknown Source)
        at java.desktop/javax.swing.text.AbstractDocument.handleInsertString(Unknown Source)
        at java.desktop/javax.swing.text.AbstractDocument.insertString(Unknown Source)
        at java.desktop/javax.swing.text.PlainDocument.insertString(Unknown Source)
        at java.desktop/javax.swing.text.AbstractDocument.replace(Unknown Source)
        at java.desktop/javax.swing.text.JTextComponent.setText(Unknown Source)
        at java.desktop/javax.swing.JTextArea.<init>(Unknown Source)
        at java.desktop/javax.swing.JTextArea.<init>(Unknown Source)
        at v0.I(v0.java:9)
        at v0.H(v0.java:98)
        at v0.a(v0.java:62)
        at jgrasp.ScalableIcon.setup(ScalableIcon.java:20)
        at jgrasp.ScalableIcon.<init>(ScalableIcon.java:35)
        at aj4.<init>(aj4.java:161)
        at aj4.a(aj4.java:93)
        at ahc.a(ahc.java:1)
        at apm.<init>(apm.java:62)
        at Grasp.a(Grasp.java:7)
        at Grasp.b(Grasp.java:127)
        at Grasp.lambda$start$0(Grasp.java:107)
        at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
        at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
        at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
        at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
        at java.base/java.security.AccessController.doPrivileged(Unknown Source)
        at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
        at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
        at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Unknown Source)
        at java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)
        ... 46 more
Caused by: java.lang.NullPointerException
        at java.desktop/sun.awt.FontConfiguration.getVersion(Unknown Source)
        at java.desktop/sun.awt.FontConfiguration.readFontConfigFile(Unknown Source)
        at java.desktop/sun.awt.FontConfiguration.init(Unknown Source)
        at java.desktop/sun.awt.X11FontManager.createFontConfiguration(Unknown Source)
        at java.desktop/sun.font.SunFontManager$2.run(Unknown Source)
        at java.base/java.security.AccessController.doPrivileged(Unknown Source)
        at java.desktop/sun.font.SunFontManager.<init>(Unknown Source)
        at java.desktop/sun.awt.FcFontManager.<init>(Unknown Source)
        at java.desktop/sun.awt.X11FontManager.<init>(Unknown Source)
        ... 51 more