import java.io.FileOutputStream;
import java.util.ArrayList;
import com.lowagie.text.Chunk;
import com.lowagie.text.Document;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfAction;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfLayer;
import com.lowagie.text.pdf.PdfWriter;
public class MainClass {
public static void main(String[] args) throws Exception {
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
writer.setPdfVersion(PdfWriter.VERSION_1_5);
document.open();
PdfLayer a1 = new PdfLayer("answer 1", writer);
a1.setOn(false);
BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
PdfContentByte cb = writer.getDirectContent();
cb.beginText();
cb.setTextMatrix(50, 790);
cb.setLeading(24);
cb.setFontAndSize(bf, 18);
cb.newlineShowText("This is a question?");
cb.beginLayer(a1);
cb.setRGBColorFill(0xFF, 0x00, 0x00);
cb.newlineShowText("This is the answer");
cb.resetRGBColorFill();
cb.endLayer();
cb.endText();
ArrayList stateOn = new ArrayList();
stateOn.add("ON");
stateOn.add(a1);
PdfAction actionOn = PdfAction.setOCGstate(stateOn, true);
ArrayList stateOff = new ArrayList();
stateOff.add("OFF");
stateOff.add(a1);
PdfAction actionOff = PdfAction.setOCGstate(stateOff, true);
ArrayList stateToggle = new ArrayList();
stateToggle.add("Toggle");
stateToggle.add(a1);
PdfAction actionToggle = PdfAction.setOCGstate(stateToggle, true);
Phrase p = new Phrase("Change the state of the answers:");
Chunk on = new Chunk(" on ").setAction(actionOn);
p.add(on);
Chunk off = new Chunk("/ off ").setAction(actionOff);
p.add(off);
Chunk toggle = new Chunk("/ toggle").setAction(actionToggle);
p.add(toggle);
document.add(p);
document.close();
}
}