/*
* Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software;Designed and Developed mainly by many Chinese
* opensource volunteers. 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.
*
* Any questions about this component can be directed to it's project Web address
* https://code.google.com/p/opencloudb/.
*
*/
package org.opencloudb.util;
import java.util.ArrayList;
import java.util.List;
/**
* @author mycat
*/
public class ArrayPerformanceMain {
public void tArray() {
byte[] a = new byte[] { 1, 2, 3, 4, 5, 6, 7 };
System.currentTimeMillis();
long t1 = System.currentTimeMillis();
for (int x = 0; x < 1000000; x++) {
byte[][] ab = new byte[10][];
for (int i = 0; i < ab.length; i++) {
ab[i] = a;
}
}
long t2 = System.currentTimeMillis();
System.out.println("array take time:" + (t2 - t1) + " ms.");
}
public void tList() {
byte[] a = new byte[] { 1, 2, 3, 4, 5, 6, 7 };
System.currentTimeMillis();
long t1 = System.currentTimeMillis();
for (int x = 0; x < 1000000; x++) {
List<byte[]> ab = new ArrayList<byte[]>(10);
for (int i = 0; i < ab.size(); i++) {
ab.add(a);
}
}
long t2 = System.currentTimeMillis();
System.out.println("list take time:" + (t2 - t1) + " ms.");
}
}