I have no idea?

Well I am in college and my MIS teacher gave me this code to anylize and tell what it is doing...Well I have no idea if you guys can give me step by step definition of what this program is doing I would appreciate.

Code:

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{
      public Point (int i, int j) {
        xCoord = i;
        yCoord = j;
      }

public void swap() {
      int temp = xCoord;
      temp=xCoord;
      yCoord= temp;
      }

public void printIt() {
      System.out.printIn("X coordinate = " + xCoord);
      System.out.printIn("Y coordinate = " + yCoord);
      }


private int xCoord; //X Coordinate
private int yCoord; //Y Coordinate

}

Public Point () {
      xCoord = 0;
      yCoord = 0;
}

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I would really appreciate if you can tell me each step

Thanks very much in advance.

Code:

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class testPoint
{
        // Just a test class.
        public static void main(String args[])
        {
                Point pt = new Point(1, 2);
                pt.swap();
                pt.printIt();
        }
}

class Point
{
        // Property variables.
        private int xCoord; //X Coordinate
        private int yCoord; //Y Coordinate

        /*
                Constructor (default).
                This is a fairly pointless - it has no accessor
                functions to set the properties.
        */
       
        public Point ()
        {
                xCoord = 0;
                yCoord = 0;
        }

        // Overridden constructor.
        public Point (int i, int j)
        {
                xCoord = i;
                yCoord = j;
        }

        /*       
                This does NOT swap the values - it
                actually gives them both the same.
        */
        public void swap()
        {
            int temp = xCoord;
              // The following line is pointless - it's initialised above.
              temp=xCoord;
              yCoord= temp;
             
              /*
                      This is how you'd want to swap the values.
                     
                      int temp = xCoord;
                      xCoord = yCoord;
                      yCoord = temp;
              */
        }
       
        // This just outputs the values to the system output stream.
        public void printIt()
        {
                // Note - your code printIn & not println.
            System.out.println("X coordinate = " + xCoord);
              System.out.println("Y coordinate = " + yCoord);
    }
}

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A pointless point :rolleyes: