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/area/AreaTreeObject.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: AreaTreeObject.java 1681435 2015-05-24 11:14:22Z adelmelle $ */

package org.apache.fop.area;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.xmlgraphics.util.QName;

import org.apache.fop.fo.extensions.ExtensionAttachment;

/**
 * Abstract base class for all area tree objects.
 */
public abstract class AreaTreeObject implements Cloneable {

    /** Foreign attributes */
    protected Map<QName, String> foreignAttributes;

    /** Extension attachments */
    protected List<ExtensionAttachment> extensionAttachments;

    /** {@inheritDoc} */
    @SuppressWarnings("unchecked")
    public Object clone() throws CloneNotSupportedException {
        AreaTreeObject ato = (AreaTreeObject) super.clone();
        if (foreignAttributes != null) {
            // @SuppressFBWarnings("BC_BAD_CAST_TO_CONCRETE_COLLECTION")
            ato.foreignAttributes = (Map<QName, String>)
                    ((HashMap<QName, String>)foreignAttributes).clone();
        }
        if (extensionAttachments != null) {
            // @SuppressFBWarnings("BC_BAD_CAST_TO_CONCRETE_COLLECTION")
            ato.extensionAttachments = (List<ExtensionAttachment>)
                    ((ArrayList<ExtensionAttachment>) extensionAttachments).clone();
        }
        return ato;
    }

    /**
     * Sets a foreign attribute.
     * @param name the qualified name of the attribute
     * @param value the attribute value
     */
    public void setForeignAttribute(QName name, String value) {
        if (this.foreignAttributes == null) {
            this.foreignAttributes = new HashMap<QName, String>();
        }
        this.foreignAttributes.put(name, value);
    }

    /**
     * Add foreign attributes from a Map.
     *
     * @param atts a Map with attributes (keys: QName, values: String)
     */
    public void setForeignAttributes(Map<QName, String> atts) {
        if (atts == null || atts.size() == 0) {
            return;
        }
        for (Map.Entry<QName, String> e : atts.entrySet()) {
            setForeignAttribute(e.getKey(), e.getValue());
        }
    }

    /**
     * Returns the value of a foreign attribute on the area.
     * @param name the qualified name of the attribute
     * @return the attribute value or null if it isn't set
     */
    public String getForeignAttributeValue(QName name) {
        if (this.foreignAttributes != null) {
            return this.foreignAttributes.get(name);
        } else {
            return null;
        }
    }

    /** @return the foreign attributes associated with this area */
    public Map<QName, String> getForeignAttributes() {
        if (this.foreignAttributes != null) {
            return Collections.unmodifiableMap(this.foreignAttributes);
        } else {
            return Collections.emptyMap();
        }
    }

    private void prepareExtensionAttachmentContainer() {
        if (this.extensionAttachments == null) {
            this.extensionAttachments = new ArrayList<ExtensionAttachment>();
        }
    }

    /**
     * Adds a new ExtensionAttachment instance to this page.
     * @param attachment the ExtensionAttachment
     */
    public void addExtensionAttachment(ExtensionAttachment attachment) {
        prepareExtensionAttachmentContainer();
        extensionAttachments.add(attachment);
    }

    /**
     * Set extension attachments from a List
     * @param extensionAttachments a List with extension attachments
     */
    public void setExtensionAttachments(List<ExtensionAttachment> extensionAttachments) {
        prepareExtensionAttachmentContainer();
        this.extensionAttachments.addAll(extensionAttachments);
    }

    /** @return the extension attachments associated with this area */
    public List<ExtensionAttachment> getExtensionAttachments() {
        if (this.extensionAttachments != null) {
            return Collections.unmodifiableList(this.extensionAttachments);
        } else {
            return Collections.emptyList();
        }
    }

    /**
     * Indicates whether this area tree object has any extension attachments.
     * @return true if there are extension attachments
     */
    public boolean hasExtensionAttachments() {
        return this.extensionAttachments != null && !this.extensionAttachments.isEmpty();
    }

}

⏎ org/apache/fop/area/AreaTreeObject.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)