ArrayAndListTest.java jvm

package data_structure_array_list;

import java.util.ArrayList;
import java.util.LinkedList;



public class ArrayAndListTest
{
	public static void main(String[] args)
	{
		int len = 10000;
		
		Integer[] arr = new Integer[len];
		for (int i = 0; i < len; i++)
		{
			arr[i] = i;
		}
		
		ArrayList list = new ArrayList();
		for (int i = 0; i < len; i++)
		{
			list.add(i);
		}
		
		LinkedList ll = new LinkedList();
		for (int i = 0; i < len; i++)
		{
			ll.add(i);
		}
		
		get1(arr, 8888);
		get2(list, 8888);
		get3(ll, 8888);
		
		set2(list, 8888, 10000);
		set3(ll, 8888, 10000);
		
		
	}
	
	public static void get1(Integer[] arr, int i)
	{
		long t1 = System.nanoTime();
		int data = arr[i];
		long t2 = System.nanoTime();
		System.out.println("t : [" + (t2 - t1) + "], query data : [" + data + "].");
		//t : [3732], data : [8888].
	}
	
	public static void get2(ArrayList list, int i)
	{
		long t1 = System.nanoTime();
		int data = list.get(i);
		long t2 = System.nanoTime();
		System.out.println("t : [" + (t2 - t1) + "], query data : [" + data + "].");
		//t : [3266], data : [8888].
	}
	
	public static void get3(LinkedList ll, int i)
	{
		long t1 = System.nanoTime();
		int data = ll.get(i);
		long t2 = System.nanoTime();
		System.out.println("t : [" + (t2 - t1) + "], query data : [" + data + "].");
		//t : [38722], data : [8888].
	}
	
	
	public static void set2(ArrayList list, int i, int data)
	{
		long t1 = System.nanoTime();
		list.add(i, data);
		long t2 = System.nanoTime();
		System.out.println("t : [" + (t2 - t1) + "], add data : [" + data + "].");
		//t : [13063], add data : [10000].
	}
	
	public static void set3(LinkedList ll, int i, int data)
	{
		long t1 = System.nanoTime();
		ll.add(i, data);
		long t2 = System.nanoTime();
		System.out.println("t : [" + (t2 - t1) + "], add data : [" + data + "].");
		//t : [32656], add data : [10000].
	}

}