Get information from a form

Tags: formscheck boxfill form

This example was written in answer to the question How to check a check box?

    This file is part of the iText (R) project.
    Copyright (c) 1998-2016 iText Group NV
 * Example written by Bruno Lowagie in answer to:
 * <p>
 * Given a check box in a form, how do we know which values to use in setField?
package com.itextpdf.samples.sandbox.acroforms;
import com.itextpdf.forms.PdfAcroForm;
import com.itextpdf.forms.fields.PdfFormField;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.test.annotations.type.SampleTest;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import java.util.Map;
public class CheckBoxValues {
    public static final String CMP = "Yes\nOff\n";
    public static final String DEST = "./target/test/resources/sandbox/acroforms/check_box_values.pdf";
    public static final String FIELD = "CP_1";
    public static final String SRC = "./src/test/resources/pdfs/datasheet.pdf";
    public static void beforeClass() throws Exception {
        new CheckBoxValues().manipulatePdf();
    public void manipulatePdf() throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC));
        PdfAcroForm form = PdfAcroForm.getAcroForm(pdfDoc, true);
        Map<String, PdfFormField> fields = form.getFormFields();
        PdfFormField field = fields.get(FIELD);
        StringBuilder sb = new StringBuilder();
        String[] states = field.getAppearanceStates();
        for (String state : states) {
        Assert.assertEquals(CMP, sb.toString());
File nameRaw URLUpdated
CheckBoxValues.javaCheckBoxValues.java2016-08-10 2:19 pm
File nameRaw URLUpdated
datasheet.pdfdatasheet.pdf2016-08-10 2:20 pm