commons-net.jar is the bytecode of Apache Commons Net library, which implements the client side of many basic Internet protocols.

Apache Commons Net Source Code files are provided in the binary packge (commons-net-3.8.0-bin.zip). You can download it at Apache Commons Net Website.

The source code of commons-net-3.8.0.jar is provided below:

⏎ org/apache/commons/net/ProtocolCommandEvent.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.
 */

package org.apache.commons.net;
import java.util.EventObject;

/**
 * There exists a large class of IETF protocols that work by sending an
 * ASCII text command and arguments to a server, and then receiving an
 * ASCII text reply.  For debugging and other purposes, it is extremely
 * useful to log or keep track of the contents of the protocol messages.
 * The ProtocolCommandEvent class coupled with the
 * {@link org.apache.commons.net.ProtocolCommandListener}
 *  interface facilitate this process.
 *
 *
 * @see ProtocolCommandListener
 * @see ProtocolCommandSupport
 */

public class ProtocolCommandEvent extends EventObject
{
    private static final long serialVersionUID = 403743538418947240L;

    private final int replyCode;
    private final boolean isCommand;
    private final String message, command;

    /**
     * Creates a ProtocolCommandEvent signalling a command was sent to
     * the server.  ProtocolCommandEvents created with this constructor
     * should only be sent after a command has been sent, but before the
     * reply has been received.
     *
     * @param source  The source of the event.
     * @param command The string representation of the command type sent, not
     *      including the arguments (e.g., "STAT" or "GET").
     * @param message The entire command string verbatim as sent to the server,
     *        including all arguments.
     */
    public ProtocolCommandEvent(final Object source, final String command, final String message)
    {
        super(source);
        this.replyCode = 0;
        this.message = message;
        this.isCommand = true;
        this.command = command;
    }


    /**
     * Creates a ProtocolCommandEvent signalling a reply to a command was
     * received.  ProtocolCommandEvents created with this constructor
     * should only be sent after a complete command reply has been received
     * fromt a server.
     *
     * @param source  The source of the event.
     * @param replyCode The integer code indicating the natureof the reply.
     *   This will be the protocol integer value for protocols
     *   that use integer reply codes, or the reply class constant
     *   corresponding to the reply for protocols like POP3 that use
     *   strings like OK rather than integer codes (i.e., POP3Repy.OK).
     * @param message The entire reply as received from the server.
     */
    public ProtocolCommandEvent(final Object source, final int replyCode, final String message)
    {
        super(source);
        this.replyCode = replyCode;
        this.message = message;
        this.isCommand = false;
        this.command = null;
    }

    /**
     * Returns the string representation of the command type sent (e.g., "STAT"
     * or "GET").  If the ProtocolCommandEvent is a reply event, then null
     * is returned.
     *
     * @return The string representation of the command type sent, or null
     *         if this is a reply event.
     */
    public String getCommand()
    {
        return command;
    }


    /**
     * Returns the reply code of the received server reply.  Undefined if
     * this is not a reply event.
     *
     * @return The reply code of the received server reply.  Undefined if
     *         not a reply event.
     */
    public int getReplyCode()
    {
        return replyCode;
    }

    /**
     * Returns true if the ProtocolCommandEvent was generated as a result
     * of sending a command.
     *
     * @return true If the ProtocolCommandEvent was generated as a result
     * of sending a command.  False otherwise.
     */
    public boolean isCommand()
    {
        return isCommand;
    }

    /**
     * Returns true if the ProtocolCommandEvent was generated as a result
     * of receiving a reply.
     *
     * @return true If the ProtocolCommandEvent was generated as a result
     * of receiving a reply.  False otherwise.
     */
    public boolean isReply()
    {
        return !isCommand();
    }

    /**
     * Returns the entire message sent to or received from the server.
     * Includes the line terminator.
     *
     * @return The entire message sent to or received from the server.
     */
    public String getMessage()
    {
        return message;
    }
}

⏎ org/apache/commons/net/ProtocolCommandEvent.java

Or download all of them as a single archive file:

File name: commons-net-3.8.0-sources.jar
File size: 437325 bytes
Release date: 2020-01-22
Download 

⇒ Download and Install commons-net.jar Binary Package

⇐ What Is commons-net.jar

⇑ Downloading and Reviewing commons-net.jar

⇑⇑ FAQ for Apache commons-net.jar