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"nb-javac" is a patched version of OpenJDK "javac", i.e., the Java compiler. This has long been part of NetBeans, providing a highly tuned Java compiler specifically for the Java editor i.e., parsing and lexing for features such as syntax coloring, code completion.
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
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* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package javax.lang.model.element;
import javax.lang.model.UnknownEntityException;
/**
* Indicates that an unknown kind of annotation value was encountered.
* This can occur if the language evolves and new kinds of annotation
* values can be stored in an annotation. May be thrown by an
* {@linkplain AnnotationValueVisitor annotation value visitor} to
* indicate that the visitor was created for a prior version of the
* language.
*
* @see AnnotationValueVisitor#visitUnknown
* @since 1.6
*/
public class UnknownAnnotationValueException extends UnknownEntityException {
private static final long serialVersionUID = 269L;
private transient AnnotationValue av;
private transient Object parameter;
/**
* Creates a new {@code UnknownAnnotationValueException}. The
* {@code p} parameter may be used to pass in an additional
* argument with information about the context in which the
* unknown annotation value was encountered; for example, the
* visit methods of {@link AnnotationValueVisitor} may pass in
* their additional parameter.
*
* @param av the unknown annotation value, may be {@code null}
* @param p an additional parameter, may be {@code null}
*/
public UnknownAnnotationValueException(AnnotationValue av, Object p) {
super("Unknown annotation value: \"" + av + "\"");
this.av = av;
this.parameter = p;
}
/**
* Returns the unknown annotation value.
* The value may be unavailable if this exception has been
* serialized and then read back in.
*
* @return the unknown element, or {@code null} if unavailable
*/
public AnnotationValue getUnknownAnnotationValue() {
return av;
}
/**
* Returns the additional argument.
*
* @return the additional argument, or {@code null} if unavailable
*/
public Object getArgument() {
return parameter;
}
}