Re-using getX() getY() in a mouseclick-event handler
This is a long question. I've tried to make it more concise but I think you need all the info to assist.

Here's a summary:
I'm trying to capture consecutive clicks as endpoints.  I'll draw line2D objects between these points. I have a listener that sends x and y values from click events to a helper class.  I'll never have more than two points, so the helper class only has firstPoint and secondPoint members. I get the clicks and send the co-ordinates to the helper class using evt.getX() and evt.getY().  The helper creates the points, but firstPoint ends up with the same co-ords as secondPoint.  My detail on what's going on can be found below the code blocks.

Here's the code in my mouse click handler:

    public class Dashboard extends javax.swing.JFrame {

        public static ClickMaster myClicks = new ClickMaster();
        public static boolean drawing = false;
        private MyPoint firstPoint = new MyPoint();
        private MyPoint secondPoint = new MyPoint();
.
.
.

    private void MyDrawingPanelMouseClicked(java.awt.event.MouseEvent evt) {
            if (firstPoint.getPointType().equals(MyPoint.PointType.NULL)) {
                drawing = !drawing;
                firstPoint = myClicks.parseClick(evt.getX(), evt.getY(), drawing);
            } else if (drawing){
                drawing = !drawing;
                secondPoint = myClicks.parseClick(evt.getX(), evt.getY(), drawing);
                myClicks.parsePoints(firstPoint, secondPoint);
            }
    }

Here's the helper class that returns points:

    public class ClickMaster {

        MyPoint anyPoint = new MyPoint();

        public ClickMaster() {
            anyPoint.setPointType(MyPoint.PointType.NULL);
        }

        public MyPoint parseClick(double x, double y, boolean firstClick) {
                if (firstClick) {
                    anyPoint.setPointType(MyPoint.PointType.ANCHOR);
                } else {
                    anyPoint.setPointType(MyPoint.PointType.END);
                }

            anyPoint.setX(x);
            anyPoint.setY(y);

            return anyPoint;
        }

And here's my implementation of Point2D objects, in case it's relevant:

    public class MyPoint extends Point2D {

        public enum PointType {

            ANCHOR, END, SOLO, NULL
        };
    
        double x;
        double y;
        PointType pointType;

        public MyPoint(PointType pType, double x, double y) {

            this.x = x;
            this.y = y;
            this.pointType = pType;
        }

        public MyPoint() {
            this.x = 0.0;
            this.y = 0.0;
            this.pointType = PointType.NULL;
        }
+ standard getters/setters as you would expect.

debugging shows that 

    firstPoint = myClicks.parseClick(firstX, firstY, drawing);

results in a point with the x and y values of the mouse event.  This is expected.

Likewise, 

    secondPoint = myClicks.parseClick(evt.getX(), evt.getY(), drawing);

Results in a point with the x and y values of the second click. Also expected.

However, when I call 

    myClicks.parsePoints(firstPoint, secondPoint);

I see that firstPoint and secondPoint have the same x,y values.

I'm not sure but I believe it's because both firstPoint and secondPoint are getting their x and y values from the mouse evt.  I think I need to put values of type double for x's and y's in to firstPoint and secondPoint as opposed to a reference to the double value returned from the mouse event by getX() and getY().

I just don't know how to make it happen.

Also, if there's a much better way to capture consecutive clicks and translate them to endpoints for shapes, I would welcome the feedback.
Re-using getX() getY() in a mouseclick-event handler
===

This is a long question. I've tried to make it more concise but I think you need all the info to assist.

Here's a summary:
I'm trying to capture consecutive clicks as endpoints.  I'll draw line2D objects between these points. I have a listener that sends x and y values from click events to a helper class.  I'll never have more than two points, so the helper class only has firstPoint and secondPoint members. I get the clicks and send the co-ordinates to the helper class using evt.getX() and evt.getY().  The helper creates the points, but firstPoint ends up with the same co-ords as secondPoint.  My detail on what's going on can be found below the code blocks.

Here's the code in my mouse click handler:

    public class Dashboard extends javax.swing.JFrame {

        public static ClickMaster myClicks = new ClickMaster();
        public static boolean drawing = false;
        private MyPoint firstPoint = new MyPoint();
        private MyPoint secondPoint = new MyPoint();
.
.
.

    private void MyDrawingPanelMouseClicked(java.awt.event.MouseEvent evt) {
            if (firstPoint.getPointType().equals(MyPoint.PointType.NULL)) {
                drawing = !drawing;
                firstPoint = myClicks.parseClick(evt.getX(), evt.getY(), drawing);
            } else if (drawing){
                drawing = !drawing;
                secondPoint = myClicks.parseClick(evt.getX(), evt.getY(), drawing);
                myClicks.parsePoints(firstPoint, secondPoint);
            }
    }

Here's the helper class that returns points:

    public class ClickMaster {

        MyPoint anyPoint = new MyPoint();

        public ClickMaster() {
            anyPoint.setPointType(MyPoint.PointType.NULL);
        }

        public MyPoint parseClick(double x, double y, boolean firstClick) {
                if (firstClick) {
                    anyPoint.setPointType(MyPoint.PointType.ANCHOR);
                } else {
                    anyPoint.setPointType(MyPoint.PointType.END);
                }

            anyPoint.setX(x);
            anyPoint.setY(y);

            return anyPoint;
        }

And here's my implementation of Point2D objects, in case it's relevant:

    public class MyPoint extends Point2D {

        public enum PointType {

            ANCHOR, END, SOLO, NULL
        };
    
        double x;
        double y;
        PointType pointType;

        public MyPoint(PointType pType, double x, double y) {

            this.x = x;
            this.y = y;
            this.pointType = pType;
        }

        public MyPoint() {
            this.x = 0.0;
            this.y = 0.0;
            this.pointType = PointType.NULL;
        }
+ standard getters/setters as you would expect.

debugging shows that 

    firstPoint = myClicks.parseClick(firstX, firstY, drawing);

results in a point with the x and y values of the mouse event.  This is expected.

Likewise, 

    secondPoint = myClicks.parseClick(evt.getX(), evt.getY(), drawing);

Results in a point with the x and y values of the second click. Also expected.

However, when I call 

    myClicks.parsePoints(firstPoint, secondPoint);

I see that firstPoint and secondPoint have the same x,y values.

I'm not sure but I believe it's because both firstPoint and secondPoint are getting their x and y values from the mouse evt.  I think I need to put values of type double for x's and y's in to firstPoint and secondPoint as opposed to a reference to the double value returned from the mouse event by getX() and getY().

I just don't know how to make it happen.

Also, if there's a much better way to capture consecutive clicks and translate them to endpoints for shapes, I would welcome the feedback.