/*

* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.

* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*/

package java.io;

import java.util.Objects;

/**

* Wraps an {@link IOException} with an unchecked exception.

*

* @since 1.8

*/

public class UncheckedIOException extends RuntimeException {

private static final long serialVersionUID = -8134305061645241065L;

/**

* Constructs an instance of this class.

*

* @param message

* the detail message, can be null

* @param cause

* the {@code IOException}

*

* @throws NullPointerException

* if the cause is {@code null}

*/

public UncheckedIOException(String message, IOException cause) {

super(message, Objects.requireNonNull(cause));

}

/**

* Constructs an instance of this class.

*

* @param cause

* the {@code IOException}

*

* @throws NullPointerException

* if the cause is {@code null}

*/

public UncheckedIOException(IOException cause) {

super(Objects.requireNonNull(cause));

}

/**

* Returns the cause of this exception.

*

* @return the {@code IOException} which is the cause of this exception.

*/

@Override

public IOException getCause() {

return (IOException) super.getCause();

}

/**

* Called to read the object from a stream.

*

* @throws InvalidObjectException

* if the object is invalid or has a cause that is not

* an {@code IOException}

*/

private void readObject(ObjectInputStream s)

throws IOException, ClassNotFoundException

{

s.defaultReadObject();

Throwable cause = super.getCause();

if (!(cause instanceof IOException))

throw new InvalidObjectException("Cause must be an IOException");

}

}