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/java2d/Java2DRendererConfig.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.
 */

/* $Id$ */

package org.apache.fop.render.java2d;

import java.util.EnumMap;

import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.configuration.Configuration;
import org.apache.fop.fonts.DefaultFontConfig;
import org.apache.fop.fonts.DefaultFontConfig.DefaultFontConfigParser;
import org.apache.fop.fonts.FontEventAdapter;
import org.apache.fop.render.RendererConfig;

import static org.apache.fop.render.java2d.Java2DRendererOption.JAVA2D_TRANSPARENT_PAGE_BACKGROUND;

/**
 * The Java2D renderer configuration data object.
 */
public final class Java2DRendererConfig implements RendererConfig {

    private final EnumMap<Java2DRendererOption, Object> params
            = new EnumMap<Java2DRendererOption, Object>(Java2DRendererOption.class);

    private final DefaultFontConfig fontConfig;

    private Java2DRendererConfig(DefaultFontConfig fontConfig) {
        this.fontConfig = fontConfig;
    }

    public DefaultFontConfig getFontInfoConfig() {
        return fontConfig;
    }

    public Boolean isPageBackgroundTransparent() {
        return Boolean.class.cast(params.get(JAVA2D_TRANSPARENT_PAGE_BACKGROUND));
    }

    /**
     * The Java2D renderer configuration data parser.
     */
    public static class Java2DRendererConfigParser implements RendererConfigParser {

        private final String mimeType;

        public Java2DRendererConfigParser(String mimeType) {
            this.mimeType = mimeType;
        }

        /** {@inheritDoc} */
        public Java2DRendererConfig build(FOUserAgent userAgent, Configuration cfg)
                throws FOPException {
            Java2DRendererConfig config = new Java2DRendererConfig(new DefaultFontConfigParser()
                    .parse(cfg, userAgent.validateStrictly(),
                            new FontEventAdapter(userAgent.getEventBroadcaster())));
            boolean value = cfg.getChild(
                    JAVA2D_TRANSPARENT_PAGE_BACKGROUND.getName(), true).getValueAsBoolean(false);
            config.params.put(JAVA2D_TRANSPARENT_PAGE_BACKGROUND, value);
            return config;
        }

        /** {@inheritDoc} */
        public String getMimeType() {
            return mimeType;
        }
    }
}

⏎ org/apache/fop/render/java2d/Java2DRendererConfig.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)