Question

Part 1:

• Write a class named after your favorite vacation spot. If you don’t have a favorite, make up a name.

• Add the following private member variables to your class
  • int numOfTimes
  • String vacaSpot
  • boolean flag

• Write a "user-defined" constructor which initializes the member variables to some initial value. The parameters of the constructor must have the same exact name as the class member variables.

• Write a public member method (name it printVacaSpot) that checks the member boolean variable (we named flag, defined up above):
  • If flag is true, then it prints out numOfTimes you have been to this "undisclosed" location.
  • If flag is false, then it prints out the numOfTimes you have been to vacaSpot.

• Write another public member method (name it toggleVacaSpot). This member method toggles the member boolean variable we named flag from false to true (or from true to false).

• Write a static method that prints out "Welcome to my Java app!"

Part 2:

• Write a class named Driver and write the “main” method:
  • Declare/Init an object of your class above (give initial arguments to the constructor)
  • Call the static method (there is only one)
  • Call printVacaSpot
  • Call toggleVacaSpot
  • Call printVacaSpot (yes, call it again)

Answer 1

CODE IN JAVA:

Goa.java file:

public class Goa {
   private int numOfTimes;
   private String vacaSpot;
   private boolean flag;

   Goa(int numOfTimes, String vacaSpot, boolean flag) {
       this.numOfTimes = numOfTimes;
       this.vacaSpot = vacaSpot;
       this.flag = flag;
   }

   public void printVacaSpot() {
       if (this.flag) {
           System.out.println(this.numOfTimes + " times i went to " + this.vacaSpot);
       } else {
           System.out.println(this.numOfTimes + " times i went to vacaSpot");
       }
   }

   public void toggleVacaSpot() {
       if (this.flag)
           this.flag = false;
       else {
           this.flag = true;
       }
   }

   public static void printIt() {
       System.out.println("Welcome to my Java app!");
   }
}

Driver.java file:

public class Driver {

   public static void main(String[] args) {
       Goa g = new Goa(10,"Goa beach", true);
       Goa.printIt();
       g.printVacaSpot();
       g.toggleVacaSpot();
       g.printVacaSpot();
   }

}

OUTPUT: