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/*
* Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* 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).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.lang.model.element;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.util.Elements;
/**
* Represents a field, {@code enum} constant, method or constructor
* parameter, local variable, resource variable, or exception
* parameter.
*
* @author Joseph D. Darcy
* @author Scott Seligman
* @author Peter von der Ahé
* @since 1.6
*/
public interface VariableElement extends Element {
/**
* Returns the value of this variable if this is a {@code final}
* field initialized to a compile-time constant. Returns {@code
* null} otherwise. The value will be of a primitive type or a
* {@code String}. If the value is of a primitive type, it is
* wrapped in the appropriate wrapper class (such as {@link
* Integer}).
*
* <p>Note that not all {@code final} fields will have
* constant values. In particular, {@code enum} constants are
* <em>not</em> considered to be compile-time constants. To have a
* constant value, a field's type must be either a primitive type
* or {@code String}.
*
* @return the value of this variable if this is a {@code final}
* field initialized to a compile-time constant, or {@code null}
* otherwise
*
* @see Elements#getConstantExpression(Object)
* @jls 15.28 Constant Expression
* @jls 4.12.4 final Variables
*/
Object getConstantValue();
}
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