Chapter 11, Problem 4PC

Month class exception

Program Plan:

Month.java:

• Definition of class “Month”.
  • Declare the variable “monNum” as “int”.
  • Create a constructor for “Month()”.
    • Assign “monNum” to “1”.
  • Create a parameterized constructor which throws the “InvalidMonthNumExc”.
    • Check the condition.
      • Throw the exception.
    • Otherwise, assign “m” to “monNum”.
  • Create a parameterized constructor which throws the “InvalidMonthNumExc”.
    • Check the condition.
      • Assign “1” to “monNum”.
    • Condition to check the month is “february”.
      • Assign “2” to “monNum”.
    • Condition to check the month is “march”
      • Assign “3” to “monNum”.
    • Condition to check the month is “april”.
      • Assign “4” to “monNum”.
    • Condition to check the month is “may”
      • Assign “5” to “monNum”.
    • Condition to check the month is “june”.
      • Assign “6” to “monNum”.
    • Condition to check the month is “july”
      • Assign “7” to “monNum”.
    • Condition to check the month is “august”
      • Assign “8” to “monNum”.
    • Condition to check the month is “September”.
      • Assign “9” to “monNum”.
    • Condition to check the month is :”October”.
      • Assign “10” to “monNum”.
    • Condition to check the month is “November”.
      • Assign “11” to “monNum”.
    • Condition to check the month is “December”.
      • Assign “12” to “monNum”.
  • Mutator method “setMonNum()”
    • Check the condition and throw the exception
  • Accessor method “getMonNum()”.
    • Return the “monNum”.
  • Accessor method “getMonName()”.
    • Declare the variable “name”.
      • Switch case to check the month equals to “January”, “February”, “March”, “April”, “May”, “June”, “July”, “August”, “September”, “October”, “November”, “December”.
      • Return the name.
  • Method definition for “toString()”.
    • Return the “getMonName()”.
  • Method definition of “equals()”
    • Declare the boolean variable “flag”.
    • Check the condition and assign the flag variable “true” or “false” according to the condition.

InvalidMonthNumExc.java:

• Definition for “InvalidMonthNumExc”
  • Definition for non-parameterized constructor.
    • Print the statement.
  • Definition for parameterized constructor
    • Print the statement.

InvalidMonthNameExc.java:

• Definition for “InvalidMonthNameExc”
  • Definition for non-parameterized constructor.
    • Print the statement.
  • Definition for parameterized constructor
    • Print the statement.

DemoOne.java:

• Definition of class “DemoOne”.
• Definition of main class.
  • Create an object “m” for “month()”.
    • Inside the try block,
      • Print the month
    • Inside the catch block,
      • Print the exception.

DemoTwo.java:

• Definition of class “DemoTwo”.
• Definition of main class.
  • Inside the try block,
    • Create an object “m” for “month()”.
    • Print the month
  • Inside the catch block,
    • Print the exception.

DemoThree.java:

• Definition of class “DemoThree”.
• Definition of main class.
  • Inside the try block,
    • Create an object “m” for “month()”.
    • Print the month
  • Inside the catch block,
    • Print the exception.
  • Inside the try block,
    • Create an object “m1” for “month()”.
    • Print the month
  • Inside the catch block,
    • Print the exception.