ArrayListVsPrimitiveArray.java

package org.cowboycoders.ant.temp;

import java.util.ArrayList;

public class ArrayListVsPrimitiveArray {
  public static void main(String[] args) {
    int big = 999999;
    long first;
    long second;
    long start = System.nanoTime();
    for (int i = 0; i < big; i++) {
      ArrayList<Byte> bytes = new ArrayList<Byte>(8);
      for (int j = 0; j < 8; j++) {
        bytes.add((byte) 10);
      }
    }
    first = System.nanoTime() - start;

    start = System.nanoTime();
    for (int i = 0; i < big; i++) {
      byte[] bytes = new byte[8];
      for (int j = 0; j < 8; j++) {
        bytes[j] = 10;
      }
    }
    second = System.nanoTime() - start;

    System.out.println(first / Math.pow(10, 9));
    System.out.println(second / Math.pow(10, 9));
  }
}