Java - List

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.Vector;

public class Test {

final static int LOOP_COUNT = 1000;
static List<Integer> list;

public static void main(String[] args) {
warmUp();

list = new ArrayList<Integer>();

System.out.println("===== ArrayList =====");
showUsedTime();

list = new Vector<Integer>();

System.out.println("===== Vector =====");
showUsedTime();

list = new LinkedList<Integer>();

System.out.println("===== LinkedList =====");
showLinkedListUsedTime();
}

private static void warmUp() {
list = new ArrayList<Integer>();

for (int i = 0; i < LOOP_COUNT; i++) {
list.add(i);
}
}

private static void showLinkedListUsedTime() {
int dummy = 0;

showUsedTime();

long startTime = System.nanoTime();

for (int i = 0; i < LOOP_COUNT; i++) {
dummy = ((LinkedList<Integer>) list).peek();
}

long endTime = System.nanoTime();
double elaspedTime = (endTime - startTime) / 1000000.0;

System.out.println("Peek Time: " + elaspedTime);
}

private static void showUsedTime() {
int dummy = 0;
long startTime = System.nanoTime();

for (int i = 0; i < LOOP_COUNT; i++) {
list.add(i);
}

long endTime = System.nanoTime();
double elaspedTime = (endTime - startTime) / 1000000.0;

System.out.println("Add Time: " + elaspedTime);

startTime = System.nanoTime();

for (int i = 0; i < LOOP_COUNT; i++) {
dummy = list.get(i);
}
endTime = System.nanoTime();
elaspedTime = (endTime - startTime) / 1000000.0;

System.out.println("Get Time: " + elaspedTime);
}
}