import org.codeswarm.bytesize.*;

public class ByteSizeDemo {

  public static void main(String[] args) throws java.text.ParseException {

    // Create a new byte size format using the default locale and settings.
    ByteSizeFormat format = new ByteSizeFormatBuilder().build();

    // Parse a byte size string.
    ByteSize a = format.parse(".85 gigabytes");

    // Convert 0.85 gigabytes to megabytes. Prints "850.0".
    System.out.println(a.numberOfBytes(ByteSizeUnits.MB));

    // Create a ByteSize object representing 1500 bytes.
    ExactByteSize b = ByteSizes.byteSize(1500);

    // Get the number of bytes. Prints "1500".
    System.out.println(b.numberOfBytes());

    // Format the size using abbreviated units. Prints "1.5 kB".
    System.out.println(format.format(b, ByteSizeFormat.WordLength.ABBREVIATION));

    // Create a new formatter for the Slovak language using IEC units (powers of 2)
    ByteSizeFormat format2 = new ByteSizeFormatBuilder()
      .unitSystem(ByteSizeUnits.IEC)
      .locale(java.util.Locale.forLanguageTag("sk"))
      .build();

    // Format the first size using full words.
    // Prints "810,623 mebibajtov" (810.623 mebibytes).
    System.out.println(format2.format(a, ByteSizeFormat.WordLength.FULL));

  }

}

<dependency>
  <groupId>org.codeswarm</groupId>
  <artifactId>bytesize</artifactId>
  <version>1.0</version>
</dependency>