openjdk源码
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/*
* Copyright (c) 2012, 2013, 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.
*
* 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.
*/
/*
* @test
* @bug 7187618 7122740
* @summary Tests just a benchmark of PropertyDescriptor(String, Class) performance
* @author Sergey Malenkov
* @run main/manual Test7122740
*/
import java.beans.PropertyDescriptor;
public class Test7122740 {
public static void main(String[] args) throws Exception {
long time = System.nanoTime();
for (int i = 0; i < 1000; i++) {
new PropertyDescriptor("name", PropertyDescriptor.class);
new PropertyDescriptor("value", Concrete.class);
}
time -= System.nanoTime();
System.out.println("Time (ms): " + (-time / 1000000));
}
public static class Abstract<T> {
private T value;
public T getValue() {
return this.value;
}
public void setValue(T value) {
this.value = value;
}
}
private static class Concrete extends Abstract<String> {
}
}