Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/fontb
ox/afm/AFMParser
        at org.pdfbox.pdmodel.font.PDFont.getAFM(PDFont.java:350)
        at org.pdfbox.pdmodel.font.PDSimpleFont.getFontHeight(PDSimpleFont.java:104)
        at org.pdfbox.util.PDFStreamEngine.showString(PDFStreamEngine.java:336)
        at org.pdfbox.util.operator.ShowText.process(ShowText.java:64)
        at org.pdfbox.util.PDFStreamEngine.processOperator(PDFStreamEngine.java:452)
        at org.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:215)