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A Modbus TCP/UDP/Serial Master and Slave implementation
There is a newer version: 3.2.1
/*
 * Copyright 2002-2016 jamod & j2mod development teams
 *
 * Licensed 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 com.ghgande.j2mod.modbus;

/**
 * Class that implements a ModbusIOException. Instances of this
 * exception are thrown when errors in the I/O occur.
 *
 * @author Dieter Wimberger
 * @author Steve O'Hara (4NG)
 * @version 2.0 (March 2016)
 */
public class ModbusIOException extends ModbusException {

    /**
     *
     */
    private static final long serialVersionUID = 1L;
    private boolean eof = false;

    /**
     * Constructs a new ModbusIOException instance.
     */
    public ModbusIOException() {
    }

    /**
     * Constructs a new ModbusIOException instance with the given
     * message.
     * 
     *
     * @param message the message describing this ModbusIOException.
     */
    public ModbusIOException(String message) {
        super(message);
    }

    /**
     * Constructs a new ModbusIOException instance with the given
     * message.
     * 

     *
     * @param message the message describing this ModbusIOException.
     * @param values optional values of the exception
     */
    public ModbusIOException(String message, Object... values) {
        super(message, values);
    }

    /**
     * Constructs a new ModbusIOException instance.
     *
     * @param b true if caused by end of stream, false otherwise.
     */
    public ModbusIOException(boolean b) {
        eof = b;
    }

    /**
     * Constructs a new ModbusIOException instance with the given
     * message.
     * 

     *
     * @param message the message describing this ModbusIOException.
     * @param b       true if caused by end of stream, false otherwise.
     */
    public ModbusIOException(String message, boolean b) {
        super(message);
        eof = b;
    }

    /**
     * Constructs a new ModbusIOException instance with the given
     * message and underlying cause.
     * 

     *
     * @param message the message describing this ModbusIOException.
     * @param cause the cause (which is saved for later retrieval by the {@code getCause()} method).
     * (A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.)
     */
    public ModbusIOException(String message, Throwable cause) {
        super(message, cause);
    }

    /**
     * Tests if this ModbusIOException is caused by an end of the
     * stream.
     * 

     *
     * @return true if stream ended, false otherwise.
     */
    public boolean isEOF() {
        return eof;
    }

    /**
     * Sets the flag that determines whether this ModbusIOException was
     * caused by an end of the stream.
     * 
     *
     * @param b true if stream ended, false otherwise.
     */
    public void setEOF(boolean b) {
        eof = b;
    }
}