itextpdf.jar is a component in iText 5 Java library to provide core functionalities. iText Java library allows you to generate and manage PDF documents.

The Source Code files are provided at iText GitHub site.

You can compile it to generate your JAR file, using pom.xml as the build configuration file.

The source code of itextpdf-5.5.14.jar is provided below:

⏎ com/itextpdf/text/pdf/collection/PdfCollectionField.java

/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
package com.itextpdf.text.pdf.collection;

import com.itextpdf.text.pdf.PdfBoolean;
import com.itextpdf.text.pdf.PdfDate;
import com.itextpdf.text.pdf.PdfDictionary;
import com.itextpdf.text.pdf.PdfName;
import com.itextpdf.text.pdf.PdfNumber;
import com.itextpdf.text.pdf.PdfObject;
import com.itextpdf.text.pdf.PdfString;
import com.itextpdf.text.error_messages.MessageLocalization;

/**
 * @author blowagie
 *
 */
public class PdfCollectionField extends PdfDictionary {
	/** A possible type of collection field. */
	public static final int TEXT = 0;
	/** A possible type of collection field. */
	public static final int DATE = 1;
	/** A possible type of collection field. */
	public static final int NUMBER = 2;
	/** A possible type of collection field. */
	public static final int FILENAME = 3;
	/** A possible type of collection field. */
	public static final int DESC = 4;
	/** A possible type of collection field. */
	public static final int MODDATE = 5;
	/** A possible type of collection field. */
	public static final int CREATIONDATE = 6;
	/** A possible type of collection field. */
	public static final int SIZE = 7;
	
	/**
	 * The type of the PDF collection field.
	 * @since 2.1.2 (was called <code>type</code> previously)
	 */
	protected int fieldType;

	/**
	 * Creates a PdfCollectionField.
	 * @param name		the field name
	 * @param type		the field type
	 */
	public PdfCollectionField(String name, int type) {
		super(PdfName.COLLECTIONFIELD);
		put(PdfName.N, new PdfString(name, PdfObject.TEXT_UNICODE));
		this.fieldType = type;
		switch(type) {
		default:
			put(PdfName.SUBTYPE, PdfName.S);
			break;
		case DATE:
			put(PdfName.SUBTYPE, PdfName.D);
			break;
		case NUMBER:
			put(PdfName.SUBTYPE, PdfName.N);
			break;
		case FILENAME:
			put(PdfName.SUBTYPE, PdfName.F);
			break;
		case DESC:
			put(PdfName.SUBTYPE, PdfName.DESC);
			break;
		case MODDATE:
			put(PdfName.SUBTYPE, PdfName.MODDATE);
			break;
		case CREATIONDATE:
			put(PdfName.SUBTYPE, PdfName.CREATIONDATE);
			break;
		case SIZE:
			put(PdfName.SUBTYPE, PdfName.SIZE);
			break;
		}
	}
	
	/**
	 * The relative order of the field name. Fields are sorted in ascending order.
	 * @param i	a number indicating the order of the field
	 */
	public void setOrder(int i) {
		put(PdfName.O, new PdfNumber(i));
	}
	
	/**
	 * Sets the initial visibility of the field.
	 * @param visible	the default is true (visible)
	 */
	public void setVisible(boolean visible) {
		put(PdfName.V, new PdfBoolean(visible));
	}
	
	/**
	 * Indication if the field value should be editable in the viewer.
	 * @param editable	the default is false (not editable)
	 */
	public void setEditable(boolean editable) {
		put(PdfName.E, new PdfBoolean(editable));
	}

	/**
	 * Checks if the type of the field is suitable for a Collection Item.
	 */
	public boolean isCollectionItem() {
		switch(fieldType) {
		case TEXT:
		case DATE:
		case NUMBER:
			return true;
		default:
			return false;
		}
	}
	
	/**
	 * Returns a PdfObject that can be used as the value of a Collection Item.
	 * @param v	value	the value that has to be changed into a PdfObject (PdfString, PdfDate or PdfNumber)	
	 */
	public PdfObject getValue(String v) {
		switch(fieldType) {
		case TEXT:
			return new PdfString(v, PdfObject.TEXT_UNICODE);
		case DATE:
			return new PdfDate(PdfDate.decode(v));
		case NUMBER:
			return new PdfNumber(v);
		}
		throw new IllegalArgumentException(MessageLocalization.getComposedMessage("1.is.not.an.acceptable.value.for.the.field.2", v, get(PdfName.N).toString()));
	}
}

⏎ com/itextpdf/text/pdf/collection/PdfCollectionField.java

Or download all of them as a single archive file:

File name: itextpdf-5.5.14-fyi.zip
File size: 2163839 bytes
Release date: 2009-10-09
Download 

⇒ iText-2.1.6.jar - iText, a JAVA-PDF library

⇐ iText layout.jar Source Code

⇑ Download and Install iText Java Library

⇑⇑ iText for PDF Generation