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HeadlessException.java

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/*

* Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved.

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

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package java.awt;

/**

* Thrown when code that is dependent on a keyboard, display, or mouse

* is called in an environment that does not support a keyboard, display,

* or mouse.

*

* @since 1.4

* @author Michael Martak

*/

public class HeadlessException extends UnsupportedOperationException {

/*

* JDK 1.4 serialVersionUID

*/

private static final long serialVersionUID = 167183644944358563L;

public HeadlessException() {}

public HeadlessException(String msg) {

super(msg);

}

public String getMessage() {

String superMessage = super.getMessage();

String headlessMessage = GraphicsEnvironment.getHeadlessMessage();

if (superMessage == null) {

return headlessMessage;

} else if (headlessMessage == null) {

return superMessage;

} else {

return superMessage + headlessMessage;

}

}

}