JAF 1.2.0 Java Source Code Files are important if you want to compile them with different JDK releases.

You can get JAF 1.2.0 Java Source Code Files from JAF GitHub Website in the "activation/src/main/java/" folder.

You can also browse JAF 1.2.0 Client Source Code files below:

⏎ javax/activation/ActivationDataFlavor.java

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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 * Copyright (c) 1997-2017 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://oss.oracle.com/licenses/CDDL+GPL-1.1
 * or LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * If you wish your version of this file to be governed by only the CDDL or
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 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
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 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 * holder.
 */

package javax.activation;

import java.awt.datatransfer.DataFlavor;
import java.io.IOException;
import javax.activation.MimeType;

/**
 * The ActivationDataFlavor class is a special subclass of
 * <code>java.awt.datatransfer.DataFlavor</code>. It allows the JAF to
 * set all three values stored by the DataFlavor class via a new
 * constructor. It also contains improved MIME parsing in the <code>equals
 * </code> method. Except for the improved parsing, its semantics are
 * identical to that of the JDK's DataFlavor class.
 */

public class ActivationDataFlavor extends DataFlavor {

    /*
     * Raison d'etre:
     *
     * The DataFlavor class included in JDK 1.1 has several limitations
     * including piss poor MIME type parsing, and the limitation of
     * only supporting serialized objects and InputStreams as
     * representation objects. This class 'fixes' that.
     */

    // I think for now I'll keep copies of all the variables and
    // then later I may choose try to better coexist with the base
    // class *sigh*
    private String mimeType = null;
    private MimeType mimeObject = null;
    private String humanPresentableName = null;
    private Class representationClass = null;

    /**
     * Construct a DataFlavor that represents an arbitrary
     * Java object. This constructor is an extension of the
     * JDK's DataFlavor in that it allows the explicit setting
     * of all three DataFlavor attributes.
     * <p>
     * The returned DataFlavor will have the following characteristics:
     * <p>
     * representationClass = representationClass<br>
     * mimeType            = mimeType<br>
     * humanName           = humanName
     * <p>
     *
     * @param representationClass the class used in this DataFlavor
     * @param mimeType the MIME type of the data represented by this class
     * @param humanPresentableName the human presentable name of the flavor
     */
    public ActivationDataFlavor(Class representationClass,
		      String mimeType, String humanPresentableName) {
	super(mimeType, humanPresentableName); // need to call super

	// init private variables:
	this.mimeType = mimeType;
	this.humanPresentableName = humanPresentableName;
	this.representationClass = representationClass;
    }

    /**
     * Construct a DataFlavor that represents a MimeType.
     * <p>
     * The returned DataFlavor will have the following characteristics:
     * <p>
     * If the mimeType is "application/x-java-serialized-object;
     * class=", the result is the same as calling new
     * DataFlavor(Class.forName()) as above.
     * <p>
     * otherwise:
     * <p>
     * representationClass = InputStream<p>
     * mimeType = mimeType<p>
     *
     * @param representationClass the class used in this DataFlavor
     * @param humanPresentableName the human presentable name of the flavor
     */
    public ActivationDataFlavor(Class representationClass,
				String humanPresentableName) {
	super(representationClass, humanPresentableName);
	this.mimeType = super.getMimeType();
	this.representationClass = representationClass;
      	this.humanPresentableName = humanPresentableName;
    }

    /**
     * Construct a DataFlavor that represents a MimeType.
     * <p>
     * The returned DataFlavor will have the following characteristics:
     * <p>
     * If the mimeType is "application/x-java-serialized-object; class=",
     * the result is the same as calling new DataFlavor(Class.forName()) as
     * above, otherwise:
     * <p>
     * representationClass = InputStream<p>
     * mimeType = mimeType
     *
     * @param mimeType the MIME type of the data represented by this class
     * @param humanPresentableName the human presentable name of the flavor
     */
    public ActivationDataFlavor(String mimeType, String humanPresentableName) {
	super(mimeType, humanPresentableName);
	this.mimeType = mimeType;
	try {
	    this.representationClass = Class.forName("java.io.InputStream");
	} catch (ClassNotFoundException ex) {
	    // XXX - should never happen, ignore it
	}
      	this.humanPresentableName = humanPresentableName;
    }

    /**
     * Return the MIME type for this DataFlavor.
     *
     * @return	the MIME type
     */
    public String getMimeType() {
	return mimeType;
    }

    /**
     * Return the representation class.
     *
     * @return	the representation class
     */
    public Class getRepresentationClass() {
	return representationClass;
    }

    /**
     * Return the Human Presentable name.
     *
     * @return	the human presentable name
     */
    public String getHumanPresentableName() {
	return humanPresentableName;
    }

    /**
     * Set the human presentable name.
     *
     * @param humanPresentableName	the name to set
     */
    public void setHumanPresentableName(String humanPresentableName) {
	this.humanPresentableName = humanPresentableName;
    }

    /**
     * Compares the DataFlavor passed in with this DataFlavor; calls
     * the <code>isMimeTypeEqual</code> method.
     *
     * @param dataFlavor	the DataFlavor to compare with
     * @return			true if the MIME type and representation class
     *				are the same
     */
    public boolean equals(DataFlavor dataFlavor) {
	return (isMimeTypeEqual(dataFlavor) &&
	 	dataFlavor.getRepresentationClass() == representationClass);
    }

    /**
     * Is the string representation of the MIME type passed in equivalent
     * to the MIME type of this DataFlavor. <p>
     *
     * ActivationDataFlavor delegates the comparison of MIME types to
     * the MimeType class included as part of the JavaBeans Activation
     * Framework. This provides a more robust comparison than is normally
     * available in the DataFlavor class.
     *
     * @param mimeType	the MIME type
     * @return		true if the same MIME type
     */
    public boolean isMimeTypeEqual(String mimeType) {
	MimeType mt = null;
	try {
	    if (mimeObject == null)
		mimeObject = new MimeType(this.mimeType);
	    mt = new MimeType(mimeType);
	} catch (MimeTypeParseException e) {
	    // something didn't parse, do a crude comparison
	    return this.mimeType.equalsIgnoreCase(mimeType);
	}

	return mimeObject.match(mt);
    }

    /**
     * Called on DataFlavor for every MIME Type parameter to allow DataFlavor
     * subclasses to handle special parameters like the text/plain charset
     * parameters, whose values are case insensitive.  (MIME type parameter
     * values are supposed to be case sensitive).
     * <p>
     * This method is called for each parameter name/value pair and should
     * return the normalized representation of the parameterValue.
     * This method is never invoked by this implementation.
     *
     * @param parameterName	the parameter name
     * @param parameterValue	the parameter value
     * @return			the normalized parameter value
     * @deprecated
     */
    protected String normalizeMimeTypeParameter(String parameterName,
						String parameterValue) {
	return parameterValue;
    }

    /**
     * Called for each MIME type string to give DataFlavor subtypes the
     * opportunity to change how the normalization of MIME types is
     * accomplished.
     * One possible use would be to add default parameter/value pairs in cases
     * where none are present in the MIME type string passed in.
     * This method is never invoked by this implementation.
     *
     * @param mimeType	the MIME type
     * @return		the normalized MIME type
     * @deprecated
     */
    protected String normalizeMimeType(String mimeType) {
	return mimeType;
    }
}

⏎ javax/activation/ActivationDataFlavor.java

Or download all of them as a single archive file:

File name: javax.activation-1.2.0-fyi.zip
File size: 78269 bytes
Release date: 2018-09-07
Download 

⇒ Older Releases of JAF (JavaBeans Activation Framework)

⇐ JAF 1.2.0 JAR File - javax.activation-1.2.0.jar

⇑ Downloading activation.jar - JavaBeans Activation Framework

⇑⇑ activation.jar - JAF (JavaBeans Activation Framework)