Chapter 14, Problem 14.21PE

Program Plan Intro

Two circles and their distance

Program Plan:

• Import required packages.
• Declare a main class named “Test” which extends the “Application” class.
  • Declare a “start ()” method which overrides the “start ()” method in the “Application” class. Inside this method,
    • Assign width as “250” to the variable “pane_WIDTH” and height as “250” to the variable “pane_HEIGHT”.
    • Create a Pane.
    • Get four random points and store it in a variable “x1”, “y1”, “x2”, and “y2”.
    • Create two circles named “circle_1” and “circle_2”.
    • Create a line named “line1”.
    • Create a text object that displays the distance by calling the function “get_Distance ()”.
    • Add the circles and text to the pane.
    • Create a scene and place it on the stage.
    • Set the title as “Exercise14_21”.
    • Display the stage on the window using “primaryStage.show ()” method.
  • Give function definition for the static method “get_Distance ()”.
    • Calculate the distance using “Math.sqrt ()” function and return the value.
  • Declare a main method using “public static main”.
    • Launch the method using “launch ()” method.