废话不多说，原因不解释。上測试代码：

package com.letv.cloud.cdn.jtest;

import java.io.IOException;

import java.util.ArrayList;

import java.util.LinkedList;

import java.util.List;

import java.util.concurrent.TimeUnit;

import org.slf4j.LoggerFactory;

import com.google.common.base.Stopwatch;

public class JtestMain {

	private final static org.slf4j.Logger LOGGER = LoggerFactory.getLogger("JtestMain");

	private static Stopwatch stopWatch = new Stopwatch();

	public static void testList(int num){

		List<String> aList = new ArrayList<String>();

		List<String> lList = new LinkedList<String>();

		stopWatch.reset();

		stopWatch.start();

		for(int i=0; i<num; i++){

			aList.add("201411180827	cctv5_800	83	796.03	115.182.51.134	123.125.89.75	in	uuid1	5");

		}

		LOGGER.info("insert num:{} ArrayList cost:{} ms",num,stopWatch.elapsedTime(TimeUnit.MILLISECONDS));

		stopWatch.reset();

		stopWatch.start();

		for(int i=0; i<num; i++){

			lList.add("201411180827	cctv5_800	83	796.03	115.182.51.134	123.125.89.75	in	uuid1	5");

		}

		LOGGER.info("insert num:{} LinkedList cost:{} ms",num,stopWatch.elapsedTime(TimeUnit.MILLISECONDS));

	}

	public static void main(String[] args) throws InterruptedException, IOException {

		int[] nums = {10000,10 * 10000,100 * 10000, 1000 * 10000, 10000 * 10000};

		for(int i=0; i<nums.length; i++){

			testList(nums[i]);

		}

	}

}

測试结果：

 INFO [main] (JtestMain.java:65) 11:50:47,480 -- insert num:10000 ArrayList cost:2 ms

 INFO [main] (JtestMain.java:72) 11:50:47,484 -- insert num:10000 LinkedList cost:1 ms

 INFO [main] (JtestMain.java:65) 11:50:47,490 -- insert num:100000 ArrayList cost:5 ms

 INFO [main] (JtestMain.java:72) 11:50:47,495 -- insert num:100000 LinkedList cost:5 ms

 INFO [main] (JtestMain.java:65) 11:50:47,504 -- insert num:1000000 ArrayList cost:8 ms

 INFO [main] (JtestMain.java:72) 11:50:47,515 -- insert num:1000000 LinkedList cost:11 ms

 INFO [main] (JtestMain.java:65) 11:50:47,606 -- insert num:10000000 ArrayList cost:89 ms

 INFO [main] (JtestMain.java:72) 11:50:49,335 -- insert num:10000000 LinkedList cost:1729 ms

 INFO [main] (JtestMain.java:65) 11:50:50,290 -- insert num:100000000 ArrayList cost:954 ms

 INFO [main] (JtestMain.java:72) 11:51:14,263 -- insert num:100000000 LinkedList cost:23973 ms