JavaFx Circles

Learning Objectives

The purpose of this lab is to give you an opportunity to learn two main topics: basic drawing and event handling using JavaFX.

Description

Create a JavaFX application that meets the following specification:

• The program initially draws five circles (see Fig. 1).
• When the user clicks on a circle, the selected circle should be highlighted (see Fig. 2). It remains highlighted until it is clicked a second time. It is possible to have several objects highlighted at the same time.
• When the user drags a circle, the circle should follow the mouse movement and move to a new location where the user releases the mouse (see Fig. 3). The user should not be allowed to drag a circle outside the application window.

Fig. 1: When the program starts, it draws five circles. see image.

Fig. 2: When the user clicks on a circle, the circle should be highlighted. It will remain highlighted until it is clicked a second time or released from a drag operation see image.

Fig. 3: Dragging a circle to the corner. see image.