Hide Utility Class Constructor : Utility classes should not have a public or default constructor

Question

I am getting this warning on Sonar.I want solution to remove this warning on sonar. My class is like this :

public class FilePathHelper {
    private static Stri         


        

Answer 1

Best practice is to throw an error if the class is constructed.

Example:

/**
 * The Class FooUtilityService.
 */
final class FooUtilityService{

/**
* Instantiates a new FooUtilityService. Private to prevent instantiation
*/
private FooUtilityService() {

    // Throw an exception if this ever *is* called
    throw new AssertionError("Instantiating utility class.");
}