Need help on following JAVA problem:

Write a class called VolumeAdjuster which contains a method called changeVolume. The changeVolume method allows you to modify how load the sound produced by samples in a WAV file is. The changeVolume method should look like the following with 3 arguments: public void changeVolume(String source file, String destination file, float scale).

The last floating point argument scale is used to multiply the samples of a WAV file up or down by a certain value. In the main method call changeVolume method and use different values of scale to test the program.