In Lab 7 you added inheritance and File I/O to your BatterUp game. In this lab, you will make additional changes to the game by adding a graphical user interface.

Pre-Lab

No pre-lab this week. Just make sure Lab 7 is complete and working to use as a start for Lab 8.

Lab (100 Points)

Change your Lab 7 solution with the additions and changes described on the following pages. The behavior of your GUI should conform to the sample screen shots provided in these instructions.

Submit the java and class files via Canvas (as a single zip-file). Include a comment block at the top of each Java file that includes your name, student id number, and Lab 8-Fall 2018.

This Lab is due Saturday December 1 at 6:00am.

Code Changes

You will need to make the following code changes to allow the GUI to function as required 1. Replace the Launcher with the following class:

import javax.swing.JFrame;

public class GUILauncher { public static void main(String[] args)

{

BatterUpGUI theGame = new BatterUpGUI();

theGame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); theGame.setSize(650,450); theGame.setVisible(true);

}

}

2. Create java. In this class, you will create an instance of BatterUp and call the play() method when the user clicks the Play button. Create the instance of BatterUp with the rest of the components you will be adding to the frame.
3. Add java. We will use this class to in conjunction with the roll() method.

public class RollResult { private int[] vals; private String output;

public RollResult(int[] vals, String output) { this.vals = vals; this.output = output; }

//add getters and setters }

4. Update all the roll methods to return RollResult instead of an int[]. Heres one method as an example.

public RollResult roll() { int[] vals = new int[2]; Random rand = new Random(); vals[0] = rand.nextInt(6) + 1; vals[1] = rand.nextInt(6) + 1;

String str = Rolled + vals[0] + + vals[1]; return new RollResult(vals, str);

}

5. Make the following changes to the Player class:
   • Add a private String data field (attribute) called output.
   • In the constructor, add output = ;
   • Create 2 methods: getOutput() which returns the output and resetOutput() which sets the output = ;
   • In takeTurn(), instead using a out.println() statement, use String concatenation to add to output (e.g. output += Strike out!!
     ;)
   • Similarly for bat() (e.g. output += dice.getOutput() + BALL!
     ;). Remember that roll() now returns RollResult instead of int[]. Update the code accordingly.
6. Update BatterUp as follows:
   • Change the play() method to return a String and accept an int called numberOfInnings. You will use this variable in the loop.
   • At the beginning of the method, create a String variable called str = ;. You will add to the String any output the method produced using out.println() (e.g. str += Inning + innings +
     ;).
   • After you call takeTurn() add the following line: str += p.getOutput();
   • Before you end the while loop add these lines of code to reset the output: if(outs >= 3) {

p.resetOutput(); }

if(p.strikes == 3) {

p.resetOutput(); }

if(p.balls == 4) {

p.resetOutput();

}

• After you call printStats() set score = 0 and return str;

7. Change movePlayers() and displayField() to return Strings. At the beginning of the method, create a String variable called str = ;. You will add to the String any output the method produced using out.println(). Return str at the end of the method.

GUI

Create a JFrame subclass named BatterUpGUI. Use a FlowLayout with recommended sizing in the instructions so your Frame matches the diagram. The JComponents required are depicted in the annotations below:

GUI Behavior

On startup, the Reset button and the JTextArea should be disabled, the other widgets should be enabled.

The user should enter a value for Number of Innings and Team Name, then click the Play button. If any of these values is missing, pop up a error message dialog when the Play button is cliched, and dont start the game until all fields contain values.

GUI Behavior (continued)

When all values are entered and Play is clicked, the text fields and the Play button should be disabled, and the Reset

GUI Behavior (continued)

When the player clicks the Play button, append the name of the team to the textArea and call the play() method passing it the number of innings. Use Integer.parseInt(innings.getText()) to parse the String number into an integer. The play method will return a String. Append the textArea with the String returned by play().

When the player clicks the Reset button, the GUI goes back to its original with the text fields and Play button enabled and the Reset button disabled.