java.lang.NoClassDefFoundError: This exception has no message.

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java.lang.NoClassDefFoundError:
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:130)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:62)
at sun.awt.motif.MToolkit.(MToolkit.java:70)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:130)
at java.awt.Toolkit$2.run(Toolkit.java:712)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:703)
at java.awt.Component.getToolkitImpl(Component.java:826)
at java.awt.Component.getToolkit(Component.java:810)
at java.awt.Component.createImage(Component.java:2564)
at VHpack.ImageGenerator.createDataImage(ImageGenerator.java:395)
at VHpack.ImageGenerator.makeImage(ImageGenerator.java:288)
at VHpack.ImageGenerator.saveImage(ImageGenerator.java:162)
at VHpack.LVItoProduct.SaveProduct(LVItoProduct.java:146)
at VHpack.LVItoProduct.generateProducts(LVItoProduct.java:61)
at VHpack.NoGuiVeg.(NoGuiVeg.java:94)
at VHpack.VegHealthFrac.main(VegHealthFrac.java:34)

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