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import java.io.FileOutputStream;
import java.util.ArrayList;
import com.lowagie.text.Document;
import com.lowagie.text.Element;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.ColumnText;
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();
PdfContentByte cb = writer.getDirectContent();
PdfLayer radiogroup = PdfLayer.createTitle("Radio Group", writer);
PdfLayer radio1 = new PdfLayer("Radiogroup: layer 1", writer);
radio1.setOn(true);
PdfLayer radio2 = new PdfLayer("Radiogroup: layer 2", writer);
radio2.setOn(false);
PdfLayer radio3 = new PdfLayer("Radiogroup: layer 3", writer);
radio3.setOn(false);
radiogroup.addChild(radio1);
radiogroup.addChild(radio2);
radiogroup.addChild(radio3);
ArrayList options = new ArrayList();
options.add(radio1);
options.add(radio2);
options.add(radio3);
writer.addOCGRadioGroup(options);
cb.beginLayer(radio1);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("option 1"), 50, 600, 0);
cb.endLayer();
cb.beginLayer(radio2);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("option 2"), 50, 575, 0);
cb.endLayer();
cb.beginLayer(radio3);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("option 3"), 50, 550, 0);
cb.endLayer();
document.close();
}
}
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