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/afp/AFPConstants.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: AFPConstants.java 1339442 2012-05-17 01:42:56Z gadams $ */

package org.apache.fop.afp;

/**
 * Constants used by the AFP renderer.
 *
 */
public interface AFPConstants {

    /**
     * The encoding to use to convert to EBCIDIC
     */
    String EBCIDIC_ENCODING = "Cp1146";

    /**
     * The encoding to use to convert to ASCII
     */
    String ASCII_ENCODING = "Cp1252";

    /**
     * The encoding to use to convert to US ASCII (7 bit)
     */
    String US_ASCII_ENCODING = "US-ASCII";

    /**
     * The scaling of the default transform is set to
     * approximately 72 user space coordinates per square inch
     */
    int DPI_72 = 72;

    /**
     * 72dpi in millipoints
     */
    int DPI_72_MPTS = DPI_72 * 1000;

    /**
     * The line width is set as a multiplier of a default line with; the width of the default
     * line width is implementation defined, which probably means different devices use different
     * actual widths; this means that the source line width (as specified in, say, a SVG line
     * element) needs to be corrected by a fudge factor that depends on the output device so that
     * the final output (print to paper, screen viewer) looks as intended.
     */
    float LINE_WIDTH_CORRECTION = 2.5f;

}

⏎ org/apache/fop/afp/AFPConstants.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)