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/render/AbstractRendererMaker.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: AbstractRendererMaker.java 1761020 2016-09-16 11:17:35Z ssteiner $ */

package org.apache.fop.render;

import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;

/**
 * Base class for factory classes which instantiate Renderers and provide information
 * about them.
 */
public abstract class AbstractRendererMaker {

    /**
     * Instantiates a new renderer.
     * @param userAgent the user agent
     * @return the newly instantiated renderer
     */
    public abstract Renderer makeRenderer(FOUserAgent userAgent);

    /**
     * @return Indicates whether this renderer requires an OutputStream to work with.
     */
    public abstract boolean needsOutputStream();

    /**
     * @return an array of MIME types the renderer supports.
     */
    public abstract String[] getSupportedMimeTypes();

    /**
     * Configures a given renderer using the appropriate configurator.
     *
     * @param userAgent user agent
     * @param renderer the renderer that is to be configured
     */
    public abstract void configureRenderer(FOUserAgent userAgent, Renderer renderer)
            throws FOPException;

    /**
     * Indicates whether a specific MIME type is supported by this renderer.
     * @param mimeType the MIME type (ex. "application/pdf")
     * @return true if the MIME type is supported
     */
    public boolean isMimeTypeSupported(String mimeType) {
        String[] mimes = getSupportedMimeTypes();
        for (String mime : mimes) {
            if (mime.equals(mimeType)) {
                return true;
            }
        }
        return false;
    }
}

⏎ org/apache/fop/render/AbstractRendererMaker.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)