This assignment focuses on the development of Methods. Follow the directions bel

ID: 3580687 • Letter: T

Question

This assignment focuses on the development of Methods.

Follow the directions below to complete this assignment. Note: I am very explicit in what I expect you to do. The methods are well defined and are to be followed!!!

Java TV Controller

Everyone is familiar with a television. You are going to create a program that mimics the controlling of the operation of a television remote control. Think about a television in general. It has some basic controls. There is a control to turn the power on and off, change the channel, and for the volume. At any point in time, the television’s state can be described by how these controls are set.

You will have to create the following attributes:

powerOn // holds the value true if the power is on, and false if the power is off.

channel // holds the value of the station that the television is showing. The range of this value is 2 through 99. Set its initial value to 3

volume // holds a number value representing the loudness (0 being no sound). The range of this value is 0 to 10. Set its initial value to 5

mode // sets the input mode of the TV. Set its initial value to TV

Input: Accept the full command (i.e., Turn On). Be able to handle case insensitive input and space characters.

Output: For all of your output messages other than the Banner message, use the DisplayMessage method only!! Upon starting your program, you will display the Banner message (invoke the Banner method). When you Exit the program, you will display the message “Thank you for using the Java Remote Controller”

For the main body of your program, you will then ask the user for input and loop continuously looking for further user input until Exit is entered. Upon entering one of the following options, you will call the respective method to perform the operations.

The User Inputs are:

Turn On – turns on the TV

Turn Off – turns off the TV

Volume Up – turns up the volume by 1

Volume Down – turns down the volume by 1.

Channel Up – increments the channel by 1.

Channel Down – decrements the channel by 1.

Mode TV – sets the mode selection to TV

Mode DVD – sets the mode selection to DVD

Exit – turns off the remote control and exits the program.

You will have to write methods named:

TurnOn:

Accepts the powerOn parameter to allow for determining if the powerOn parameter is true or false

Return value is updated powerOn attribute

If the powerOn value is already true

Display a message “TV already on”

If the powerOn value is false

Sets the powerOn attribute value to true.

Display a message “TV On, Your Channel is xxx and the Volume is xxx”

TurnOff:

Accepts the powerOn parameter to allow for determining if the powerOn parameter is true or false

Return value is updated powerOn attribute

Sets the powerOn attribute value to false

Display a message “TV is now off”

If the powerOn value is already false,

DIsplay a message “TV already off”

VolumeUp:

Accepts the powerOn parameter to allow for determining if the powerOn parameter is true or false and the volume parameter

Return value is updated volume attribute

If the powerOn parameter is false

Display a message “TV is off”

Test the value of the volume attribute - You cannot increment the volume attribute greater than 10.

If the volume value is less than 10, increment the volume value by 1.

If the volume attribute is 10, display “Maximum Volume”

VolumeDown:

Accepts the powerOn parameter to allow for determining if the powerOn parameter is trueor false and the volume parameter

Return value is updated volume attribute

If the powerOn parameter is false

Display a message “TV is off”

If the powerOn parameter is true, test the value of the volume attribute - You cannot decrement the volume attribute lower than 0.

If the value is greater than 0, decrement the volume attribute value by 1

If the value is 0, display “Sound Muted”

ChannelUp

Accepts the powerOn parameter to allow for determining if the powerOn parameter is true or falseand the channel parameter

Return value is the updated channel parameter

If the powerOn parameter is false

Display a message “TV is off”

If the powerOn parameter is true, test the value of the channel attribute – the channel range is from 2 through 99.

If the channel value is less than 99, increment that channel value by 1

If the channel value is 99, set the channel value to 2

Display the current channel using the display method “Channel x”

ChannelDown

Accepts the powerOn parameter to allow for determining if the powerOn parameter is true or falseand the channel parameter

Return value is the updated channel parameter

If the powerOn parameter is false

Display a message “TV is off”

If the powerOn parameter is true, test the value of the channel attribute – the channel range is from 2 through 99.

If the channel value is less than 99, increment that channel value by 1

If the channel value is 99, set the channel value to 2

Display the current channel using the display method “Channel x”

SetModeTV:

Accepts the powerOn parameter to allow for determining if the powerOn parameter is true or false

Return is the updated mode value

If the powerOn parameter is false

Display a message “TV is off”

If the powerOn parameter is true

display “TV Mode”

Return mode set to TV

SetModeDVD:

Accepts the powerOn parameter to allow for determining if the powerOn parameter is true or false

Return is the updated mode value

If the powerOn parameter is false

Display a message “TV is off”

If the powerOn parameter is true

display “DVD Mode”

Return mode set to DVD

// methods that I’m providing

/*
Common Display methods
*/
public static void DisplayMessage(String msg)
{
System.out.println(msg);

} // end method

/*
Display banner
*/
public static void Banner()
{
      System.out.println("Welcome to your Java TV Remote Control");
      System.out.println("Please enter your selection");
      System.out.println("Turn On - turns on your TV");
      System.out.println("Turn Off - turns off your TV");
      System.out.println("Volume Up - turns up the volume");
      System.out.println("Volume Down - turn down the volume");
      System.out.println("Channel Up - increments the channel");
      System.out.println("Channel Down - decrements the channel");

      System.out.println("Mode TV – set TV mode");
      System.out.println("Mode DVD – set DVD mode");

      System.out.println();
      System.out.println("Please enter your selection");
} // end method

Explanation / Answer

import java.util.*;
//Class TV Controller defined
class TVController
{
   //Data member of the class
   static boolean powerOn;
   static int channel = 3;
   static int volume = 5;
   static String mode = "TV";
   //Method to turn on the TV
   static boolean TurnOn()
   {
       //Checks the power status
       if(powerOn)
           DisplayMessage("TV already on");
       //If it is off set it to on and display the current channel and volume
       else
       {
           powerOn = true;
           System.out.println("TV On, Your Channel is " + channel + " and the Volume is " + volume);
       }
       //Return power status
       return powerOn;
   }
   //Method to turn off the TV
   static boolean TurnOff()
   {
       //If it is on set it to off
       if(powerOn)
       {
           powerOn = false;
           DisplayMessage("TV is now off");
       }
       //If it is already off
       else
           DisplayMessage("TV already off");
       //Return power status
       return powerOn;
   }
   //Method to increase the volume by 1
   static int VolumeUp()
   {
       //If power is on
       if(powerOn)
           //If volume is maximum
           if(volume == 10)
               DisplayMessage("Maximum Volume");
           //If volume is not maximum increase the volume by 1
           else
               volume++;
       //If tv is off
       else
           DisplayMessage("TV is off");
       //Return volume
       return volume;
   }
   //Method to decrease the volume by 1
   static int VolumeDown()
   {
       //If power is on
       if(powerOn)
       {
           //If volume is minimum
           if(volume == 0)
               DisplayMessage("Sound Muted");
           //If volume is not minimum decrease the volume by 1
           else
               volume--;
       }
       //If tv is off
       else
       {
           DisplayMessage("TV is off");
       }
       //Return volume
       return volume;
   }
   //Method to increase the channel by 1
   static int ChannelUp()
   {
       //If power is on
       if(powerOn)
       {
           //If channel is maximum set the channel to 2
           if(channel == 99)
               channel = 2;
           //If channel is not maximum increase the channel by 1
           else
               channel++;
       }
       //If tv is off
       else
       {
           DisplayMessage("TV is off");
       }
       //Return channel
       return channel;
   }
   //Method to decrease the channel by 1
   static int ChannelDown()
   {
       //If power is on
       if(powerOn)
       {
           //If channel is minimum set the channel to 99
           if(channel == 2)
               channel = 99;
           //If channel is not minimum decrease the channel by 1
           else
               channel--;
       }
       //If tv is off
       else
       {
           DisplayMessage("TV is off");
       }
       //Return channel
       return channel;
   }
   //Set the TV Mode
   static String setModeTV()
   {
       //If power is on set the mode to TV
       if(powerOn)
       {
           mode = "TV";
           DisplayMessage("TV mode");
       }
       //If tv is off
       else
           DisplayMessage("TV is off");
       //Return mode
       return mode;
   }
   //Set the DVD Mode
   static String setModeDVD()
   {
       //If power is on set the mode to DVD
       if(powerOn)
       {
           mode = "DVD";
           DisplayMessage("DVD mode");
       }
       //If tv is off
       else
           DisplayMessage("TV is off");
       //Return mode
       return mode;
   }
   // methods that I’m providing
   /*
       Common Display methods
   */
   public static void DisplayMessage(String msg)
   {
       System.out.println(msg);

   } // end method

   /*
       Display banner
   */
   public static void Banner()
   {
   System.out.println(" Welcome to your Java TV Remote Control");
   System.out.println("Please enter your selection");
   System.out.println("1) Turn On - turns on your TV");
   System.out.println("2) Turn Off - turns off your TV");
   System.out.println("3) Volume Up - turns up the volume");
   System.out.println("4) Volume Down - turn down the volume");
   System.out.println("5) Channel Up - increments the channel");
   System.out.println("6) Channel Down - decrements the channel");
   System.out.println("7) Mode TV – set TV mode");
   System.out.println("8) Mode DVD – set DVD mode");
   System.out.println("9) Exit");

   System.out.println();
   System.out.println("Please enter your selection");
   } // end method
   public static void main(String ss[])
   {
       int ch;
       //Scanner class to accept user choice
       Scanner sc = new Scanner(System.in);
       do
       {
           //Displays the menu
           Banner();
           //Accept user choice
           ch = sc.nextInt();
           switch(ch)
           {
               case 1:
                   TurnOn();
               break;
               case 2:
                   TurnOff();
                   break;
               case 3:
                   DisplayMessage("Volume: " + String.valueOf(VolumeUp()));
               break;
               case 4:
                   DisplayMessage("Volume: " + String.valueOf(VolumeDown()));
               break;
               case 5:
                   DisplayMessage("Channel: " + String.valueOf(ChannelUp()));
               break;
               case 6:
                   DisplayMessage("Channel: " + String.valueOf(ChannelDown()));
               break;
               case 7:
                   setModeTV();
               break;
               case 8:
                   setModeDVD();
               break;
               case 9:
                   System.exit(0);
               break;

               default:
                   System.out.println("ERROR: Invalid Choice! Re - Enter: ");
           }
       }while(true);
   }
}

Ouput:

Welcome to your Java TV Remote Control
Please enter your selection
1) Turn On - turns on your TV
2) Turn Off - turns off your TV
3) Volume Up - turns up the volume
4) Volume Down - turn down the volume
5) Channel Up - increments the channel
6) Channel Down - decrements the channel
7) Mode TV ? set TV mode
8) Mode DVD ? set DVD mode
9) Exit

Please enter your selection
2
TV already off

Please enter your selection
1
TV On, Your Channel is 3 and the Volume is 5

Please enter your selection
6
Channel: 2

Please enter your selection
6
Channel: 99

Please enter your selection
3
Volume: 6

Please enter your selection
3
Volume: 7

Please enter your selection
3
Volume: 8

Please enter your selection
3
Volume: 9

Please enter your selection
7
TV mode

Please enter your selection
8
DVD mode

Please enter your selection
4
Volume: 8

Please enter your selection
4
Volume: 7

Please enter your selection
4
Volume: 6

Please enter your selection
4
Volume: 5

Please enter your selection
5
Channel: 2

Please enter your selection
5
Channel: 3

Please enter your selection
5
Channel: 4

Please enter your selection
5
Channel: 5

Please enter your selection
3
Volume: 6

Please enter your selection
3
Volume: 7

Please enter your selection
3
Volume: 8

Please enter your selection
3
Volume: 9

Please enter your selection
3
Volume: 10

Please enter your selection
3
Maximum Volume
Volume: 10

Please enter your selection
9

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