title: "Multiple markers at this line" error at constructor
body: <p>So I am using gpdraw as a library to draw stuff for my computer science class, and I'm trying to run this in Eclipse and I put the main method but I'm still getting errors.   </p>
  
  <pre><code>import gpdraw.*;
  
  public class House {
  
      public static void main(String[] args) {
          private DrawingTool myPencil;
          private SketchPad myPaper;
  
          public House() {
              myPaper = new SketchPad(500, 500);
  
              myPencil = new DrawingTool(myPaper);
          }
  
          public void draw() {
              myPencil.up();
              myPencil.turnRight(90);
              myPencil.forward(20);
              myPencil.turnLeft(90);
              myPencil.forward(20);
              myPencil.turnRight(20);
              myPencil.forward(200);
          }
  
      }  
  
  }
  </code></pre>