contentStream.setFont( font, 18 );
contentStream.moveTextPositionByAmount( inch, ph-inch-18);
contentStream.drawString( "PDFBox" );
contentStream.moveTextPositionByAmount( 0,-(inch/2));
contentStream.drawString( "Click Here" );
contentStream.endText();
contentStream.close();
// Now add the markup annotation, a highlight to PDFBox text
PDAnnotationTextMarkup txtMark = new PDAnnotationTextMarkup(PDAnnotationTextMarkup.SUB_TYPE_HIGHLIGHT);