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/*
* Copyright (C) 2014 The Android Open Source Project
* Copyright (c) 1996, 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 java.lang;
import java.lang.reflect.Method;
import libcore.util.EmptyArray;
/**
* The {@code Void} class is an uninstantiable placeholder class to hold a
* reference to the {@code Class} object representing the Java keyword
* void.
*
* @author unascribed
* @since JDK1.1
*/
public final
class Void {
/**
* The {@code Class} object representing the pseudo-type corresponding to
* the keyword {@code void}.
*/
public static final Class<Void> TYPE = lookupType();
// Android-changed: Upstream code would use reflection to establish the value of "void.class".
// ART makes a native call instead because the reflection approach could lead to initialization
// of TYPE with the current, i.e. uninitialized, value of TYPE due to other Android changes.
@dalvik.annotation.optimization.FastNative
private static native Class<Void> lookupType();
/*
@SuppressWarnings("unchecked")
private static Class<Void> lookupType() {
try {
Method method = Runnable.class.getMethod("run", EmptyArray.CLASS);
return (Class<Void>) method.getReturnType();
} catch (Exception e) {
throw new AssertionError(e);
}
}
*/
/*
* The Void class cannot be instantiated.
*/
private Void() {}
}
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