import java.io.FileOutputStream;
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.PdfLayerMembership;
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 layer1 = new PdfLayer("layer 1", writer);
PdfLayer layer2 = new PdfLayer("layer 2", writer);
PdfLayer layer3 = new PdfLayer("layer 3", writer);
PdfLayerMembership cat = new PdfLayerMembership(writer);
cat.addMember(layer2);
cat.addMember(layer3);
PdfLayerMembership no_cat = new PdfLayerMembership(writer);
no_cat.addMember(layer2);
no_cat.addMember(layer3);
no_cat.setVisibilityPolicy(PdfLayerMembership.ALLOFF);
cb.beginLayer(layer1);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("A"), 50, 775, 0);
cb.endLayer();
cb.beginLayer(layer2);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("B"), 50, 750, 0);
cb.endLayer();
cb.beginLayer(layer3);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("C"), 50, 725, 0);
cb.endLayer();
cb.beginLayer(cat);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("D"), 50, 700, 0);
cb.endLayer();
cb.beginLayer(no_cat);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, new Phrase("E"), 50, 700, 0);
cb.endLayer();
document.close();
}
}