Add the following method to the TimeSpan class: public void add(TimeSpan span)
Adds the given amount of time to this time span.
Recall the TimeSpan code from this chapter:
public class TimeSpan {
private int hours;
private int minutes;
public void add(int hours, int minutes) { ... }
public int getHours() { ... }
public int getMinutes() { ... }
public String toString() { ... }
// your code goes here
}

there is no universally accepted definition of art. although commonly used to describe something of beauty, or a skill which produces an aesthetic result, there is no clear line in principle between (say) a unique piece of handmade sculpture, and a mass-produced but visually attractive item. we might say that art requires thought - some kind of creative impulse - but this raises more questions: for example, how much thought is required? if someone flings paint at a canvas, hoping by this action to create a work of art, does the result automatically constitute art?