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:

⏎ com/sun/activation/registries/MailcapTokenizer.java

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * 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:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * 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
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * 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
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package	com.sun.activation.registries;

/**
 *	A tokenizer for strings in the form of "foo/bar; prop1=val1; ... ".
 *	Useful for parsing MIME content types.
 */
public class MailcapTokenizer {

    public static final int UNKNOWN_TOKEN = 0;
    public static final int START_TOKEN = 1;
    public static final int STRING_TOKEN = 2;
    public static final int EOI_TOKEN = 5;
    public static final int SLASH_TOKEN = '/';
    public static final int SEMICOLON_TOKEN = ';';
    public static final int EQUALS_TOKEN = '=';

    /**
     *  Constructor
     *
     *  @parameter  inputString the string to tokenize
     */
    public MailcapTokenizer(String inputString) {
	data = inputString;
	dataIndex = 0;
	dataLength = inputString.length();

	currentToken = START_TOKEN;
	currentTokenValue = "";

	isAutoquoting = false;
	autoquoteChar = ';';
    }

    /**
     *  Set whether auto-quoting is on or off.
     *
     *  Auto-quoting means that all characters after the first
     *  non-whitespace, non-control character up to the auto-quote
     *  terminator character or EOI (minus any whitespace immediatley
     *  preceeding it) is considered a token.
     *
     *  This is required for handling command strings in a mailcap entry.
     */
    public void setIsAutoquoting(boolean value) {
	isAutoquoting = value;
    }

    /**
     *  Retrieve current token.
     *
     *  @returns    The current token value
     */
    public int getCurrentToken() {
	return currentToken;
    }

    /*
     *  Get a String that describes the given token.
     */
    public static String nameForToken(int token) {
	String name = "really unknown";

	switch(token) {
	    case UNKNOWN_TOKEN:
		name = "unknown";
		break;
	    case START_TOKEN:
		name = "start";
		break;
	    case STRING_TOKEN:
		name = "string";
		break;
	    case EOI_TOKEN:
		name = "EOI";
		break;
	    case SLASH_TOKEN:
		name = "'/'";
		break;
	    case SEMICOLON_TOKEN:
		name = "';'";
		break;
	    case EQUALS_TOKEN:
		name = "'='";
		break;
	}

	return name;
    }

    /*
     *  Retrieve current token value.
     *
     *  @returns    A String containing the current token value
     */
    public String getCurrentTokenValue() {
	return currentTokenValue;
    }

    /*
     *  Process the next token.
     *
     *  @returns    the next token
     */
    public int nextToken() {
	if (dataIndex < dataLength) {
	    //  skip white space
	    while ((dataIndex < dataLength) &&
		    (isWhiteSpaceChar(data.charAt(dataIndex)))) {
		++dataIndex;
	    }

	    if (dataIndex < dataLength) {
		//  examine the current character and see what kind of token we have
		char c = data.charAt(dataIndex);
		if (isAutoquoting) {
		    if (c == ';' || c == '=') {
			currentToken = c;
			currentTokenValue = new Character(c).toString();
			++dataIndex;
		    } else {
			processAutoquoteToken();
		    }
		} else {
		    if (isStringTokenChar(c)) {
			processStringToken();
		    } else if ((c == '/') || (c == ';') || (c == '=')) {
			currentToken = c;
			currentTokenValue = new Character(c).toString();
			++dataIndex;
		    } else {
			currentToken = UNKNOWN_TOKEN;
			currentTokenValue = new Character(c).toString();
			++dataIndex;
		    }
		}
	    } else {
		currentToken = EOI_TOKEN;
		currentTokenValue = null;
	    }
	} else {
	    currentToken = EOI_TOKEN;
	    currentTokenValue = null;
	}

	return currentToken;
    }

    private void processStringToken() {
	//  capture the initial index
	int initialIndex = dataIndex;

	//  skip to 1st non string token character
	while ((dataIndex < dataLength) &&
		isStringTokenChar(data.charAt(dataIndex))) {
	    ++dataIndex;
	}

	currentToken = STRING_TOKEN;
	currentTokenValue = data.substring(initialIndex, dataIndex);
    }

    private void processAutoquoteToken() {
	//  capture the initial index
	int initialIndex = dataIndex;

	//  now skip to the 1st non-escaped autoquote termination character
	//  XXX - doesn't actually consider escaping
	boolean foundTerminator = false;
	while ((dataIndex < dataLength) && !foundTerminator) {
	    char c = data.charAt(dataIndex);
	    if (c != autoquoteChar) {
		++dataIndex;
	    } else {
		foundTerminator = true;
	    }
	}

	currentToken = STRING_TOKEN;
	currentTokenValue =
	    fixEscapeSequences(data.substring(initialIndex, dataIndex));
    }

    private static boolean isSpecialChar(char c) {
	boolean lAnswer = false;

	switch(c) {
	    case '(':
	    case ')':
	    case '<':
	    case '>':
	    case '@':
	    case ',':
	    case ';':
	    case ':':
	    case '\\':
	    case '"':
	    case '/':
	    case '[':
	    case ']':
	    case '?':
	    case '=':
		lAnswer = true;
		break;
	}

	return lAnswer;
    }

    private static boolean isControlChar(char c) {
	return Character.isISOControl(c);
    }

    private static boolean isWhiteSpaceChar(char c) {
	return Character.isWhitespace(c);
    }

    private static boolean isStringTokenChar(char c) {
	return !isSpecialChar(c) && !isControlChar(c) && !isWhiteSpaceChar(c);
    }

    private static String fixEscapeSequences(String inputString) {
	int inputLength = inputString.length();
	StringBuffer buffer = new StringBuffer();
	buffer.ensureCapacity(inputLength);

	for (int i = 0; i < inputLength; ++i) {
	    char currentChar = inputString.charAt(i);
	    if (currentChar != '\\') {
		buffer.append(currentChar);
	    } else {
		if (i < inputLength - 1) {
		    char nextChar = inputString.charAt(i + 1);
		    buffer.append(nextChar);

		    //  force a skip over the next character too
		    ++i;
		} else {
		    buffer.append(currentChar);
		}
	    }
	}

	return buffer.toString();
    }

    private String  data;
    private int     dataIndex;
    private int     dataLength;
    private int     currentToken;
    private String  currentTokenValue;
    private boolean isAutoquoting;
    private char    autoquoteChar;

    /*
    public static void main(String[] args) {
	for (int i = 0; i < args.length; ++i) {
	    MailcapTokenizer tokenizer = new MailcapTokenizer(args[i]);

	    System.out.println("Original: |" + args[i] + "|");

	    int currentToken = tokenizer.nextToken();
	    while (currentToken != EOI_TOKEN) {
		switch(currentToken) {
		    case UNKNOWN_TOKEN:
			System.out.println("  Unknown Token:           |" + tokenizer.getCurrentTokenValue() + "|");
			break;
		    case START_TOKEN:
			System.out.println("  Start Token:             |" + tokenizer.getCurrentTokenValue() + "|");
			break;
		    case STRING_TOKEN:
			System.out.println("  String Token:            |" + tokenizer.getCurrentTokenValue() + "|");
			break;
		    case EOI_TOKEN:
			System.out.println("  EOI Token:               |" + tokenizer.getCurrentTokenValue() + "|");
			break;
		    case SLASH_TOKEN:
			System.out.println("  Slash Token:             |" + tokenizer.getCurrentTokenValue() + "|");
			break;
		    case SEMICOLON_TOKEN:
			System.out.println("  Semicolon Token:         |" + tokenizer.getCurrentTokenValue() + "|");
			break;
		    case EQUALS_TOKEN:
			System.out.println("  Equals Token:            |" + tokenizer.getCurrentTokenValue() + "|");
			break;
		    default:
			System.out.println("  Really Unknown Token:    |" + tokenizer.getCurrentTokenValue() + "|");
			break;
		}

		currentToken = tokenizer.nextToken();
	    }

	    System.out.println("");
	}
    }
    */
}

⏎ com/sun/activation/registries/MailcapTokenizer.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)