What Is fop.jar? I got it from the fop-2.7-bin.zip.

fop.jar in fop-2.7-bin.zip is the JAR file for FOP 2.7, which is a print formatter driven by XSL formatting objects (XSL-FO). You can obtain fop.jar from the build folder of the fop-2.7-bin.zip file.

Below is the information about the fop.jar (2.2) file:

JAR File Size and Download Location:

JAR name: fop.jar, fop-2.7.jar
Target JDK version: 1.7
File name: fop.jar
File size: 4442817 bytes
Release date: 20-Jan-2022
Download: Apache FOP Website

Java source code files for fop.jar:

⏎ org/apache/fop/pdf/PDFEmbeddedFile.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/* $Id: PDFEmbeddedFile.java 1758773 2016-09-01 13:02:29Z ssteiner $ */

package org.apache.fop.pdf;

import java.io.IOException;
import java.util.Date;

/**
 * This class represents an embedded file stream.
 */
public class PDFEmbeddedFile extends PDFStream {

    /**
     * Creates a new embedded file stream.
     */
    public PDFEmbeddedFile() {
        super();
        put("Type", new PDFName("EmbeddedFile"));
        put("Subtype", new PDFName("application/octet-stream"));
        PDFDictionary params = new PDFDictionary();
        params.put("CreationDate", PDFInfo.formatDateTime(new Date()));
        params.put("ModDate", PDFInfo.formatDateTime(new Date()));
        put("Params", params);
    }

    /**
     * Determine if should encode on the fly.
     * @return true if should encode on the fly
     */
    protected boolean isEncodingOnTheFly() {
        //Acrobat doesn't like an indirect /Length object in this case,
        //but only when the embedded file is a PDF file.
        return false;
    }

    /** {@inheritDoc} */
    protected void populateStreamDict(Object lengthEntry) {
        super.populateStreamDict(lengthEntry);
        try {
            PDFDictionary dict = (PDFDictionary)get("Params");
            dict.put("Size", Integer.valueOf(data.getSize()));
        } catch (IOException ioe) {
            //ignore and just skip this entry as it's optional
        }
    }

}

⏎ org/apache/fop/pdf/PDFEmbeddedFile.java

Or download all of them as a single archive file:

File name: fop-2.7-src.zip
File size: 3401312 bytes
Release date: 2022-01-20
Download 

⇒ "fop" Command in fop-2.7-bin.zip

⇐ What Is fop-2.7-bin.zip

⇑ Download and Installing of FOP 2.x

⇑⇑ FAQ for FOP (Formatting Object Processor)