Please modify the following code to NOT have "TicTacToe extends Board" (I don't want any extending)....
Please modify the following code to NOT have "TicTacToe extends Board" (I don't want any extending). Please ensure the resulting code completes EACH part of the following prompt:
"Your task is to create a game of Tic-Tac-Toe using a 2-Dimensional String array as the game board. Start by creating a Board class that holds the array. The constructor should use a traditional for-loop to fill the array with "blank" Strings (eg. "-"). You may want to include other instance data... Include the follwoing methods: public void setSpace(int row, int col, String s) will change a specific space to have either "X" or "O", but only if the space is available. public boolean hasThree(String s) will check to see if there are 3 in a row, column, or diagonal. public String toString() will generate a String that displays the Board with appropriate formatting. Create a driver class called TicTacToe that instantiates a Board object and allows 2 players to go head to head in a the game."
public class Board {
//creating board
String board[][]=new String[3][3];
//construction to fill the board with null string "-"
public Board() {
for(int i=0;i<3;i++)
for(int j=0;j<3;j++)
board[i][j]="-";
}
}
//creating class and extending board class
public class TicTacToe extends Board{
//declaring variable
boolean flag=false;
static boolean plyr=true;
//printing the board
public String toString()
{
String result = "";
result += " | | \n";
result += " " + board[0][0] + " | " + board[0][1] + " | " +
board[0][2] + "\n";
result += "_____|_____|_____\n";
result += " | | \n";
result += " " + board[1][0] + " | " + board[1][1] + " | " +
board[1][2] + "\n";
result += "_____|_____|_____\n";
result += " | | \n";
result += " " + board[2][0] + " | " + board[2][1] + " | " +
board[2][2] + "\n";
result += " | | \n";
return result;
}
//creating main function
public static void main(String args[]){
//declaring variable
int row,col,choice;
//initilizing empty symbol
String symb="";
//scanner object to get input
Scanner in=new Scanner(System.in);
//creating tictactoe object
TicTacToe ttt=new TicTacToe();
//loop to get the input from the players
do{
//printing option for the player
System.out.println("1.Enter the X or O");
System.out.println("2.View Board");
System.out.println("0.Exit");
System.out.print("Select an option(0,1,2): ");
//geting player response
choice=in.nextInt();
if(choice==1){
//checking if the board is full then print msg and terminate the
program
if(!ttt.isFull()){
System.out.println("Board full");
break;
}
//Checking which player is about to play
if(plyr==true){
System.out.println("Player 1 turn");
//assigning symbol for player 1
symb="X";
//changing the player for next turn
plyr=!plyr;
}
else{
System.out.println("Player 2 turn");
//assigning symbol for player 1
symb="O";
//changing the player for next turn
plyr=!plyr;
}
//asking player for location to insert symbol
System.out.print("Enter row no: ");
row=in.nextInt();
System.out.print("Enter column no: ");
col=in.nextInt();
//inserting the symbol in the board
ttt.setSpace(row,col,symb);
}
else if(choice==2){
//printing the board
System.out.println(ttt.toString());
}
else{
//informing user that selected option is invalid
System.out.println("Selected option is invalid");
}
//checking for winning situation
if(ttt.hasThree(symb)==true){
System.out.println("WON!!!");
break;
}
//if choice is 0 then cancel the game
}while(choice!=0);
}
//function to check that board is full
boolean isFull(){
for(int i=0;i<3;i++)
for(int j=0;j<3;j++)
if(board[i][j].equals("-"))
flag=true;
return flag;
}
//inserting the sybol to the board
void setSpace(int row, int col, String s){
//insert if the location in board is empty or show the massage to
player
if(board[row][col].equals("-"))
board[row][col]=s;
else{
System.out.println("The space is already filled choose
another");
plyr=!plyr;
}
}
//checking for winning situation
boolean hasThree(String s){
boolean win=false;
//checking for rows winning situation
if((board[0][0].equals(s)) && (board[0][1].equals(s))
&& (board[0][2].equals(s)))
win=true;
else if((board[1][0].equals(s)) && (board[1][1].equals(s))
&& (board[1][2].equals(s)))
win=true;
else if((board[2][0].equals(s)) && (board[2][1].equals(s))
&& (board[2][2].equals(s)))
win=true;
//checking for column winning situation
else if((board[0][0].equals(s)) && (board[1][0].equals(s))
&& (board[2][0].equals(s)))
win=true;
else if((board[0][1].equals(s)) && (board[1][1].equals(s))
&& (board[2][1].equals(s)))
win=true;
else if((board[0][2].equals(s)) && (board[1][2].equals(s))
&& (board[2][2].equals(s)))
win=true;
//checking for diagonal winning situation
else if((board[0][0].equals(s)) && (board[1][1].equals(s))
&& (board[2][2].equals(s)))
win=true;
else if((board[0][2].equals(s)) && (board[1][1].equals(s))
&& (board[2][0].equals(s)))
win=true;
else
win=false;
return win;
}
}
Homework Answers
////creating class and extending board class
//TicTacToe.java
/*The java class TicTacToe that do not extends
* any Board class and aloows user to enter
* row and column numbers and allows to view
* board and allows to exit from the program.*/
import java.util.Scanner;
public class TicTacToe
{
//Modificaiton :
//include string array
//creating board
private String board[][]=new String[3][3];
//declaring variable
private boolean flag=false;
private static boolean plyr=true;
//Modificaiton
//create a constructor of TicTacToe
//to initialize the board array
/*construction to fill the board with null string
"-"*/
public TicTacToe()
{
for(int i=0;i<3;i++)
for(int
j=0;j<3;j++)
board[i][j]="-";
}
//Modification
//Align the board neatly to show
//board values
//printing the board
public String toString()
{
String result = "";
result += " " + board[0][0] + " | "
+ board[0][1] + " | " + board[0][2] + "\n";
result += " " + board[1][0] + " | "
+ board[1][1] + " | " + board[1][2] + "\n";
result += " " + board[2][0] + " | "
+ board[2][1] + " | " + board[2][2] + "\n";
return result;
}
//creating main function
public static void main(String args[]){
//declaring variable
int row,col,choice;
//Initializing empty symbol
String symb="";
//scanner object to get input
Scanner in=new
Scanner(System.in);
//creating tictactoe object
TicTacToe ttt=new
TicTacToe();
//loop to get the input from the
players
do{
//printing
option for the player
System.out.println("1.Enter the X or O");
System.out.println("2.View Board");
System.out.println("0.Exit");
System.out.print("Select an option(0,1,2): ");
//geting player
response
choice=in.nextInt();
if(choice==1){
//checking if the board is full then print msg
and terminate the program
if(!ttt.isFull()){
System.out.println("Board
full");
break;
}
//Checking which player is about to play
if(plyr==true){
System.out.println("Player 1
turn");
//assigning symbol for player
1
symb="X";
//changing the player for
next turn
plyr=!plyr;
}
else{
System.out.println("Player 2
turn");
//assigning symbol for player
1
symb="O";
//changing the player for
next turn
plyr=!plyr;
}
//asking player for location to insert
symbol
System.out.print("Enter row no: ");
row=in.nextInt();
System.out.print("Enter column no: ");
col=in.nextInt();
//inserting the symbol in the board
ttt.setSpace(row,col,symb);
}
else
if(choice==2){
//printing the board
System.out.println(ttt.toString());
}
else{
//informing user that selected option is
invalid
System.out.println("Selected option is
invalid");
}
//checking for
winning situation
if(ttt.hasThree(symb)==true){
System.out.println("WON!!!");
break;
}
//if choice is 0
then cancel the game
}while(choice!=0);
}
//function to check that board is full
boolean isFull(){
for(int i=0;i<3;i++)
for(int
j=0;j<3;j++)
if(board[i][j].equals("-"))
flag=true;
return flag;
}
//inserting the symbol to the board
void setSpace(int row, int col, String s){
//insert if the location in board
is empty or show the massage to player
if(board[row][col].equals("-"))
board[row][col]=s;
else{
System.out.println("The space is already filled choose
another");
plyr=!plyr;
}
}
//checking for winning situation
boolean hasThree(String s){
boolean win=false;
//checking for rows winning
situation
if((board[0][0].equals(s))
&& (board[0][1].equals(s)) &&
(board[0][2].equals(s)))
win=true;
else if((board[1][0].equals(s))
&& (board[1][1].equals(s)) &&
(board[1][2].equals(s)))
win=true;
else if((board[2][0].equals(s))
&& (board[2][1].equals(s)) &&
(board[2][2].equals(s)))
win=true;
//checking for column winning
situation
else if((board[0][0].equals(s))
&& (board[1][0].equals(s)) &&
(board[2][0].equals(s)))
win=true;
else if((board[0][1].equals(s))
&& (board[1][1].equals(s)) &&
(board[2][1].equals(s)))
win=true;
else if((board[0][2].equals(s))
&& (board[1][2].equals(s)) &&
(board[2][2].equals(s)))
win=true;
//checking for diagonal winning
situation
else if((board[0][0].equals(s))
&& (board[1][1].equals(s)) &&
(board[2][2].equals(s)))
win=true;
else if((board[0][2].equals(s))
&& (board[1][1].equals(s)) &&
(board[2][0].equals(s)))
win=true;
else
win=false;
return win;
}
}
Sample Output:
1.Enter the X or O
2.View Board
0.Exit
Select an option(0,1,2): 1
Player 1 turn
Enter row no: 0
Enter column no: 0
1.Enter the X or O
2.View Board
0.Exit
Select an option(0,1,2): 2
X | - | -
- | - | -
- | - | -
1.Enter the X or O
2.View Board
0.Exit
Select an option(0,1,2): 1
Player 2 turn
Enter row no: 0
Enter column no: 1
1.Enter the X or O
2.View Board
0.Exit
Select an option(0,1,2): 2
X | O | -
- | - | -
- | - | -
1.Enter the X or O
2.View Board
0.Exit
Select an option(0,1,2): 1
Player 1 turn
Enter row no: 1
Enter column no: 0
1.Enter the X or O
2.View Board
0.Exit
Select an option(0,1,2): 2
X | O | -
X | - | -
- | - | -
1.Enter the X or O
2.View Board
0.Exit
Select an option(0,1,2): 1
Player 2 turn
Enter row no: 2
Enter column no: 2
1.Enter the X or O
2.View Board
0.Exit
Select an option(0,1,2): 2
X | O | -
X | - | -
- | - | O
1.Enter the X or O
2.View Board
0.Exit
Select an option(0,1,2): 1
Player 1 turn
Enter row no: 2
Enter column no: 0
WON!!!
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