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/layoutmgr/BorderOrPaddingElement.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: BorderOrPaddingElement.java 893238 2009-12-22 17:20:51Z vhennebert $ */

package org.apache.fop.layoutmgr;

import org.apache.fop.datatypes.PercentBaseContext;
import org.apache.fop.fo.properties.CondLengthProperty;
import org.apache.fop.traits.MinOptMax;

/**
 * This class represents an unresolved border or padding element.
 */
public abstract class BorderOrPaddingElement extends UnresolvedListElementWithLength {

    /**
     * Main constructor
     * @param position the Position instance needed by the addAreas stage of the LMs.
     * @param side the side to which this space element applies.
     * @param condLength the length-conditional property for a border or padding specification
     * @param isFirst true if this is a padding- or border-before of the first area generated.
     * @param isLast true if this is a padding- or border-after of the last area generated.
     * @param context the property evaluation context
     */
    public BorderOrPaddingElement(Position position, CondLengthProperty condLength,
            RelSide side,
            boolean isFirst, boolean isLast, PercentBaseContext context) {
        super(position,
                MinOptMax.getInstance(condLength.getLength().getValue(context)), side,
                        condLength.isDiscard(), isFirst, isLast);
    }

    /** {@inheritDoc} */
    public abstract void notifyLayoutManager(MinOptMax effectiveLength);

}

⏎ org/apache/fop/layoutmgr/BorderOrPaddingElement.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)