Chapter 5, Problem 4PE

Program Plan Intro

Recommendation of recharge plan

Program plan:

• Import a necessary package.
• Create a class “CellPhoneService”,
  • Define the method “main()”,
    • Declare and initialize the necessary variables.
    • Get the talk minutes entered into the first dialog box.
    • Assign the integer value returned from the method “parseInt()”.
    • Get the number of text messages entered into the second dialog box.
    • Assign the integer value returned from the method “parseInt()”.
    • Get the gigabytes of data entered into the third dialog box.
    • Assign the integer value returned from the method “parseInt()”.
    • Check whether the data balance is greater than “0”,
      • Check whether the data balance is less than or equal to the minimum data balance,
        • If it is true, set the plan to “E”.
        • Assign the price for the plan “E”.
      • Otherwise,
        • Set the plan to “F”.
        • Assign the price for the plan “F”.
    • Otherwise, check whether the required talk minutes is less than the minimum talk minutes,
      • If it is true, check whether the number of required text messages is “0” and required data balance is “0”,
        • If it is true, set the plan to “A”.
        • Assign the price for the plan “A”.
      • Otherwise,
        • Set the plan to “B”.
        • Assign the price for the plan “B”.
    • Otherwise, check whether the required number of text message is less than the minimum number of text messages,
      • If it is true, set the plan to “C”.
      • Assign the price for the plan “C”.
    • Otherwise,
      • Set the plan to “D”,
      • Assign the price for the plan “D”.
    • Concatenate the string with the determined plan and price.
    • Display the plan message in dialog box.