Allocation time measurement of simple Java data types

AllocationMeasurement.java

import java.io.FileWriter;
import java.io.IOException;

public class AllocationMeasurement {
    public static void main(String[] args) {
        try {
            FileWriter csv = new FileWriter("mem.csv");
            csv.write("Array length,Byte,Short,Int,Long,Object reference" + System.lineSeparator());

            for (int i = 0; i < 30000; i += 10) {
                long byteTime = System.nanoTime();
                byte[] byteArr = new byte[i];
                byteTime = System.nanoTime() - byteTime;

                long shortTime = System.nanoTime();
                short[] shortArr = new short[i];
                shortTime = System.nanoTime() - shortTime;

                long intTime = System.nanoTime();
                int[] intArr = new int[i];
                intTime = System.nanoTime() - intTime;

                long longTime = System.nanoTime();
                long[] longArr = new long[i];
                longTime = System.nanoTime() - longTime;

                long objectTime = System.nanoTime();
                Object[] ObjectArr = new Object[i];
                objectTime = System.nanoTime() - objectTime;

                csv.write(String.format("%d,%d,%d,%d,%d,%d%s", i, byteTime, shortTime, intTime, longTime, objectTime, System.lineSeparator()));
            }

            csv.close();
        }
        catch (IOException e) {
            System.out.println("Could not access file \"mem.csv\".");
        }
    }
}