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/hyphenation/Hyphenation.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: Hyphenation.java 1805173 2017-08-16 10:50:04Z ssteiner $ */

package org.apache.fop.hyphenation;

/**
 * This class represents a hyphenated word.
 *
 * This work was originally authored by Carlos Villegas cav@uniscope.co.jp
 */
public class Hyphenation {

    private int[] hyphenPoints;
    private String word;

    /**
     * number of hyphenation points in word
     */
    private int len;

    /**
     * rawWord as made of alternating strings and {@link Hyphen Hyphen}
     * instances
     */
    Hyphenation(String word, int[] points) {
        this.word = word;
        hyphenPoints = points;
        len = points.length;
    }

    /**
     * @return the number of hyphenation points in the word
     */
    public int length() {
        return len;
    }

    /**
     * @param index an index position
     * @return the pre-break text, not including the hyphen character
     */
    public String getPreHyphenText(int index) {
        return word.substring(0, hyphenPoints[index]);
    }

    /**
     * @param index an index position
     * @return the post-break text
     */
    public String getPostHyphenText(int index) {
        return word.substring(hyphenPoints[index]);
    }

    /**
     * @return the hyphenation points
     */
    public int[] getHyphenationPoints() {
        return hyphenPoints;
    }

    /** {@inheritDoc} */
    public String toString() {
        StringBuffer str = new StringBuffer();
        int start = 0;
        for (int i = 0; i < len; i++) {
            str.append(word.substring(start, hyphenPoints[i]) + "-");
            start = hyphenPoints[i];
        }
        str.append(word.substring(start));
        return str.toString();
    }

}

⏎ org/apache/fop/hyphenation/Hyphenation.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)