Create JUnit tests for the getDensityQualifier(int dpi) method based upon the following requirements: Invoke this method by passing an integer screen density value (referred to as dpi). The method should return the appropriate screen density qualifier value as shown below. (The screen density qualifier is returned as a String value).

Density Qualifier	Description
ldpi	Up to 120dpi
mdpi	Up to 160dpi
hdpi	Up to 240dpi
xhdpi	Up to 320dpi
xxhdpi	Up to 480dpi
xxxhdpi	Up to 640dpi
tvdpi	For televisions, exactly 213dpi
nodpi	Any other unspecified positive value

package assignment; 

import assignment.exceptions.InvalidValueException; import static assignment.SampleClass.ProductType.*; public class SampleClass { // Ctrl-Shift-T

 public String getDensityQualifier(int dpi) throws InvalidValueException { if (dpi <= 0) throw new InvalidValueException("DPI value must be greater than zero"); if (dpi == 213) { return "tvdpi"; } if (dpi <= 120) { return "ldpi"; } if (dpi <= 160) { return "mdpi"; } if (dpi <= 240) { return "hdpi"; } if (dpi <= 320) { return "xhdpi"; } if (dpi <= 480) { return "xxhdpi"; } if (dpi <= 640) { return "xxxhdpi"; } return "nodpi"; } }

package assignment.exceptions; public class InvalidValueException extends Exception { public InvalidValueException(String s) { super(s); } }