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/fonts/EmbeddingMode.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: EmbeddingMode.java 1352986 2012-06-22 18:07:04Z vhennebert $ */

package org.apache.fop.fonts;

import java.util.Locale;

/**
 * This enumerates the embedding mode of fonts; full; subset; auto (auto defaults to full for
 * Type 1 fonts and subset for TrueType fonts.
 */
public enum EmbeddingMode {
    /** Default option: assumes FULL for Type 1 fonts and SUBSET for TrueType fonts. */
    AUTO,
    /** Full font embedding: This means the whole of the font is written to file. */
    FULL,
    /** Subset font embedding: Only the mandatory tables and a subset of glyphs are written
     * to file.*/
    SUBSET;

    /**
     * Returns the name of this embedding mode.
     * @return the name of this embedding mode in lower case.
     */
    public String getName() {
        return this.toString().toLowerCase(Locale.ENGLISH);
    }

    /**
     * Returns the embedding mode corresponding to the given name.
     * @param value the name of an embedding mode (not case sensitive)
     * @return the corresponding embedding mode
     */
    public static EmbeddingMode getValue(String value) {
        for (EmbeddingMode mode : EmbeddingMode.values()) {
            if (mode.toString().equalsIgnoreCase(value)) {
                return mode;
            }
        }
        throw new IllegalArgumentException("Invalid embedding-mode: " + value);
    }
}

⏎ org/apache/fop/fonts/EmbeddingMode.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)