Chapter 20, Problem 4PP

Program Plan Intro

Calculator

Program plan:

Bar.java

• Create a class named “Bar”. Inside the class,
  • Define the required variables.
  • Set the height.
  • Define the “Bar ()” method.
    • Assign the values.
  • Define the “draw ()” method.
    • Create the object.
    • Define and declare the required variables.
    • Draw the box
    • Set the color
    • Draw the label.
    • Set the color of the label.

ChartComponent.java

• Create a class named “ChartComponent”. Inside the class,
  • Define the required variables.
  • Set the height.
  • Define the “ChartComponent ()” method.
    • Initialize the array
    • Assign the values.
  • Define the “append ()” method.
    • Add the labels
    • Condition to compare the values.
    • Call the method to draw
  • Define the “paintComponent ()” method.
    • Define the required varaibles
    • Calculate the scale value
    • Loop that iterates to create bar chart.

SavingsCalculatorFrame.java:

• Create a class named “SavingsCalculatorFrame”. Inside the class,
  • Define the required components.
  • Set the width and height of the frame.
  • Set the width and height of the chart
  • Define the “SavingsCalculatorFrame ()” method.
    • Set the frame size
    • Create the control panel.
  • Define the “createControlPanel ()” method.
    • Define the required fields.
    • Create the panel
    • Add the labels to the components.
    • Add the button
    • Add the scroll pane
    • Return the panel.
  • Define the method “createCalculateButton ()” and inside,
    • Define the button
    • Define the class “ButtonListener ()” and inside,
    • Define the action listener method.
      • Define the required variables.
      • Loop that iterates to calculate the interest,balance.
      • Append the values obtained

ChartViewer.java

• Create a class named “ChartViewer”. Inside the class,
  • Define the “main()” method
    • Define the frame
    • Set the close operation
    • Set the title
    • Set the visibility.