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The goal of quality-check is to provide a small Java library for basic runtime code quality checks. It provides similar features to org.springframework.util.Assert or com.google.common.base.Preconditions without the need to include big libraries or frameworks such as Spring or Guava. The package quality-check tries to replace these libraries and provide all the basic code quality checks you need. The checks provided here are typically used to validate method parameters and detect errors during runtime. To detect errors before runtime we use JSR-305 Annotations. With these annotations you are able to detect possible bugs earlier. For more informations look at FindBugs™ JSR-305 support.

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/*******************************************************************************
 * Copyright 2013 André Rouél and Dominik Seichter
 * 
 * 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 net.sf.qualitycheck.exception;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

/**
 * Thrown to indicate that a method was passed arguments which was expected
 * to be equal to another object but was not.
 * 
 * @author André Rouél
 * @author Dominik Seichter
 */
public class IllegalNotEqualException extends RuntimeException {

	private static final long serialVersionUID = 49779498587504287L;

	/**
	 * Default message to indicate that the given arguments must be equal to another object.
	 */
	protected static final String DEFAULT_MESSAGE = "Argument must be equal to a defined value.";
	
	/**
	 * Constructs an {@code IllegalNotEqualException} with the default message
	 * {@link IllegalNotEqualException#DEFAULT_MESSAGE}.
	 */
	public IllegalNotEqualException() {
		super(DEFAULT_MESSAGE);
	}

	/**
	 * Constructs an {@code IllegalNotEqualException} with a given message.
	 * 
	 * @param message
	 *            explains why the object must equal another object
	 */
	public IllegalNotEqualException(@Nonnull final String message) {
		super(message);
	}

	/**
	 * Constructs a new exception with a given message.
	 * 
	 * @param message
	 *            explains why the object must equal another object
	 * @param cause
	 *            the cause (which is saved for later retrieval by the {@link Throwable#getCause()} method). (A
	 *            {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.)
	 */
	public IllegalNotEqualException(@Nonnull final String message, @Nullable final Throwable cause) {
		super(message, cause);
	}
	
	/**
	 * Constructs a new exception with the default message {@link IllegalNotEqualException#DEFAULT_MESSAGE}.
	 * 
	 * @param cause
	 *            the cause (which is saved for later retrieval by the {@link Throwable#getCause()} method). (A
	 *            {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.)
	 */
	public IllegalNotEqualException(@Nullable final Throwable cause) {
		super(DEFAULT_MESSAGE, cause);
	}

}