trouble with ArrayList

[rippon]

I hope my code (below) is self-explanatory. The compiler doesn't like it, though. It says:
"cannot find symbol
symbol: method getX()
location: class java.lang.Object"

I don't get it. getX() is definitely a method of the class Point2D.Double, so what's the problem?

Please help. Thanks.

         ArrayList testList = new ArrayList<Point2D.Double>(2);
            
         testList.add(new Point2D.Double(3,5));
         testList.add(new Point2D.Double(4,6));
         messageBox4.setText( // messageBox4 is a JTextArea
           "testList.size() is: " + testList.size() + "\n" +
           "firstPoint.x: " + testList.get(0).getX()
                 );

[Fubarable]

While you have created a generic ArrayList<Point2D> object (no need for the Double part), you don't have a generic ArrayList<Point2D> variable, and so the compiler won't know that it holds Point2D objects. Make the variable generic too.

[rippon]

(Feel quite stupid now - the answer was pretty obvious, but just couldn't see it.)

Thanks. Your answers are always remarkably quick, thorough and clear.

[Fubarable]

You're welcome, and glad it helped!