// compile with: jsc interface.js

  interface ICopyObj {
    function Copy() : Object;
  }

  class CopyInt implements ICopyObj {
    public var i : int;
    public function CopyInt(i : int) {
      this.i = i;
    }
    public function Copy() : Object {
      return new CopyInt(i)
    }
  }

  var h1 : CopyInt = new CopyInt(8);
  var h2 : CopyInt = h1.Copy();
  print("Original: " + h1.i + " Copy: " + h2.i);

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