In an Object-oriented Programming language, a helper class is used to provide some extra functionality of the current class. It is special types of class that filled with a static or non-static method. And an instance of a helper class is also called a helper object.
For Example-
public class PrependHelper
{
// static functions
public static String WoofPrepend(String text)
{
return text + "!";
}
public static String WoohPrepend(String text)
{
return text + "!";
}
}
