Android™ How to Program, Second Edition

6.5. Class Line Maintains a Line’s Endpoints

This app consists of four classes:

• Line (Fig. 6.4)

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 1   // Line.java 2   // Class Line represents a line with two endpoints. 3   package com.deitel.cannongame; 4  5   import android.graphics.Point; 6  7   public class Line 8   { 9      public Point start = new Point(); // start Point--(0,0) by default10      public Point end = new Point(); // end Point--(0,0) by default    11   } // end class Line

Fig. 6.4 | Class Line represents a line with two endpoints.

• MainActivity (the Activity subclass; Section 6.6)

• CannonGameFragment (Section 6.7), and

• CannonView (Section 6.8)

In this section, we discuss class Line, which represents a line’s starting and ending Point ...