title: extends GraphicsProgram
body: <p>I'm watching the Programming Methodology from Stanford on Youtube and professor uses the GraphicsProgram as a basic class for the class he creates. </p>
  
  <p>I do:</p>
  
  <pre><code>public class Test extends GraphicsProgram {
    public static void main(String[] args) {
  
    }
  }
  </code></pre>
  
  <p>But getting the error that GraphicsProgram can't be resolved to a type. </p>
  
  <p>I clicked <kbd>Ctrl</kbd>+<kbd>Shift</kbd>+<kbd>O</kbd> being in Eclipse to import required packages but nothing happened. </p>
  
  <p>Just wondered how professor uses it, please tell me if you know, thanks in advance!</p>