java.lang.NoClassDefFoundError: org/jdesktop/layout/GroupLayout$Group

This is just a small personal note.

I needed a tool that can generate database specifications out of an existing database, and was trying out SchemaSpyGUI, which is a wrapper for SchemaSpy.

When I ran it, I got the following error:

$ ./schemaSpyGUI.sh  
starting SchemaSpyGUI
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/jdesktop/layout/GroupLayout$Group
        at schemaspygui.Main$1.run(Main.java:29)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:226)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:673)
        at java.awt.EventQueue.access$300(EventQueue.java:96)
        at java.awt.EventQueue$2.run(EventQueue.java:634)
        at java.awt.EventQueue$2.run(EventQueue.java:632)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:108)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:643)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)
Caused by: java.lang.ClassNotFoundException: org.jdesktop.layout.GroupLayout$Group
        at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
        ... 15 more

I needed to add swing-layout to the class path, and the problem was resolved.