Rebecca Berry

I went ahead and put a System.out.println(s); in. Now when I run the program this is what I get when I click on the spaces. (I clicked top row to bottom row, left to right)

run: 00 01 02 10 11 12 20 21 22

Hello again!  I am having an issue with my 2 Player Tic Tac Toe Game. When I run it the board comes up like it should, however, nothing happens when I click on a space to make a move. When I click on the space it should mark it with a 'X' and then state it is O's turn and so on. What am I missing?  Thanks as always for the pointers.
package tictactoe2player; import javax.swing.JFrame; import javax.swing.JButton; import javax.swing.JPanel; import javax.swing.JLabel; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import java.awt.BorderLayout; import java.awt.GridLayout; import java.util.Scanner; public class TicTacToe2Player extends JFrame        implements ActionListener {    private final JLabel messages;    private final JPanel board;    private final JButton[][] boardLocations;    private char [][] choice;    private boolean xsTurn;        public TicTacToe2Player()    {        super("Tic-Tac-Toe");        this.setLayout(new BorderLayout());        this.setSize(600, 600);                messages = new JLabel("Player X's turn");        messages.setVisible(true);        this.add(messages,BorderLayout.NORTH);                board = new JPanel(new GridLayout(3,3));        board.setVisible(true);                boardLocations = new JButton[3][3];        choice = new char[3][3];                for(int i=0; i<3; i++)        {            for(int j=0; j<3; j++)            {                boardLocations[i][j] = new JButton("");                boardLocations[i][j].setEnabled(true);                boardLocations[i][j].addActionListener(this);                boardLocations[i][j].                setActionCommand(i+""+j);                        boardLocations[i][j].setVisible(true);                board.add(boardLocations[i][j]);                choice[i][j]='.';                                    }        }        this.add(board, BorderLayout.CENTER);        xsTurn = true;    }      private boolean winGame(char playerChoice, char[][]board)    {                  for(int row = 0; row<3; row++)        {            int count = 0;            for(int column = 0; column<3; column++)            {               if(board[row][column]==playerChoice)                   count++;               else                   count = 0;            }            if (count == 3)                return true;        }                for(int column = 0; column<3; column++)        {          int count =0;            for(int row = 0; row<3; row++)            {                if(board[row][column]== playerChoice)                    count++;                else                    count = 0;            }            if(count == 3)                return true;        }                if(board[1][1]== playerChoice && board[0][0]== playerChoice && board[2][2]== playerChoice)            return true;        if(board[1][0]== playerChoice && board[0][2]== playerChoice && board[2][0] == playerChoice)            return true;                return false;    }    private boolean tie(char[][]board)    {        for(int i=0; i<3; i++)        {            for(int j=0; j<3; j++)            {                if(board[i][j]== '.')                    return false;            }        }        return true;    }    public void actionPerformed(ActionEvent e)    {        String s =e.getActionCommand();                if(s.length()== 3)        {            Scanner scan = new Scanner(s);            String rowString = scan.next();            String columnString = scan.next();            int row =Integer.parseInt(rowString);            int column =Integer.parseInt(columnString);            JButton button = boardLocations[row][column];                        if(button.isEnabled())            {                if(xsTurn)                {                    messages.setText("Player O's turn.");                    button.setText("X");                    choice[row][column] = 'X';                    button.setEnabled(false);                    xsTurn = false;                }                        else                    {                        messages.setText("It's X's turn.");                        button.setText("O");                        choice[row][column] = 'O';                        button.setEnabled(false);                        xsTurn = true;                    }                }            if(tie(choice))            {                messages.setText("It's a tie!");                                for(int i=0; i<3; i++)                    for(int j=0; j<3; j++)                        boardLocations[i][j].setEnabled(false);            }            if(winGame('X', choice))            {                messages.setText("X wins the game!");                                for(int i=0; i<3; i++)                    for (int j=0; j<3; j++)                        boardLocations[i][j].setEnabled(false);            }            if(winGame('O', choice))            {                messages.setText("O wins the game!");                for(int i=0; i<3; i++)                    for(int j=0; j<3; j++)                        boardLocations[i][j].setEnabled(false);            }                    }    }    public static void main(String[] args)    {        TicTacToe2Player game = new TicTacToe2Player();        game.setVisible(true);    }     }

Ok I think I fixed it.  All seems to be compiling the way it should be.  Thanks again everyone for the pointers!  When you are essentially self teaching yourself friendly help is always greatly appreciated.  Until my next question...here is my working code.

package ratios; import java.util.Scanner; import java.util.InputMismatchException; public class Ratios {    public static void main(String[] args) throws ZeroException    {        boolean notNumber = true;        double number1 = 0;        double number2 = 0;        double ratio = 0;            Scanner input = new Scanner(System.in);          while (notNumber)            {                                          try                {                    System.out.println("Enter two numbers.  Please leave a space between the numbers. I will compute the ratio.");                    number1 = input.nextDouble();                    number2 = input.nextDouble();                                            if(number2 == 0)                            throw new ZeroException("There was an exception.  Divide by zero... Try again");                                ratio = number1/number2;                                notNumber = false;                }                catch(ZeroException e)                {                  System.out.println(e.getMessage());                 }                catch(InputMismatchException e)                {                    input.nextLine();                    System.out.println("You must enter an interger. Try again.");                }            }                      System.out.println("The ration r = "+ ratio);    } }

Zero Exceptions Class
package ratios; public class ZeroException extends Exception {    public ZeroException()    {        super("There was an exception:");    }    public ZeroException(String message)    {        super(message);    }     }

Greetings everyone. So I have written a program that is supposed to figure the ratio of two numbers. It is supposed to warn if the 2nd number is zero and also catch if the user inputs something other than a number.  Everything appears to be working except the Catch for the InputMismatchException.  Only a few weeks into Java so still pretty much a noob. Any pointers on how to fix this or where my code is incorrect would be appreciated.  Side note: I know my code is a little bit of a mess at the moment. I usually go thru at the end and fix the formatting. Thanks again for any pointers!

My code:


import java.util.Scanner; import java.util.InputMismatchException; public class Ratios {    public static void main(String[] args)    {        double number1 = 0;        double number2 = 0;        double ratio;            Scanner input = new Scanner(System.in);               {           System.out.println("Enter two numbers.  Please leave a space between the numbers. I will compute the ratio");           number1 = input.nextDouble();           number2 = input.nextDouble();           ratio = number1/number2;       }          if (number2 == 0)            {                System.out.println("The was an exception: Divide by zero... Try again.");                System.out.println("Enter two numbers.  Please leave a space between the numbers. I will compute the ratio");                number1 = input.nextDouble();                number2 = input.nextDouble();            }                try                {}                catch (InputMismatchException e)                {                    System.out.println("Not a number! Try again");                    number1 = input.nextDouble();                    number2 = input.nextDouble();                }        ratio = number1/number2;        System.out.println("The average is: "+ ratio);    } }
Current output when attempting to enter something other than a number:
run: Enter two numbers.  Please leave a space between the numbers. I will compute the ratio 10 0 The was an exception: Divide by zero... Try again. Enter two number.  Please leave a space between the numbers. I will compute the ratio 10 sam Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Scanner.java:864) at java.util.Scanner.next(Scanner.java:1485) at java.util.Scanner.nextDouble(Scanner.java:2413) at ratios.Ratios.main(Ratios.java:34) C:\Users\Violettwilight\AppData\Local\NetBeans\Cache\8.1\executor-snippets\run.xml:53: Java returned: 1 BUILD FAILED (total time: 6 seconds)

Hi again all!  So I have created a program to delete the repeats in an array.  It seems to be working with one exception.  I need the results to have a comma separating all the letters. So instead of the results displaying as a,bc I need them to display as a,b,c. Any advise on how to solve this issue? As always thanks for the input.
Here is my code:
import java.util.Arrays;



public class DeletingRepeats {    public static String deleteRepeats(String value)    { int length = value.length(); char[] table = new char[length]; int tableLength = 0; char[] result = new char[length]; int resultLength = 0; for (int i = 0; i < value.length(); i++) {    char current = value.charAt(i);      boolean exists = false;    for (int y = 0; y < tableLength; y++) { if (current == table[y]) {    exists = true;    break; }    }        if (!exists) { table[tableLength] = current; tableLength++; result[resultLength] = current; resultLength++;    } } return new String(result, 0, resultLength);    }    public static void main(String[] args)    { System.out.println("Example 1:"); String test1 = ("a,"+"b,"+"c,"+"b,"+"a,");        System.out.println("Original array values: "+ test1); String result = deleteRepeats(test1); System.out.println("Revised array values after repeats removed: "+result);    } }    
And here is the output:
run: Example 1: Original array values: a,b,c,b,a, Revised array values after repeats removed: a,bc BUILD SUCCESSFUL (total time: 0 seconds)

I did get it to work the way I needed it too.  Thanks again for the help.  Here is the final code:
package tictactoe;   import java.util.Scanner; public class TicTacToe {      public static boolean winGame(char playerChoice, char[][]board)    {                int count=0;        for(int row = 0; row<3; row++)        {            count = 0;            for(int column = 0; column<3; column++)            {               if(board[row][column]==playerChoice)                   count++;               else                   count = 0;            }            if (count == 3)                return true;        }        for(int column = 0; column<3; column++)        {            count = 0;            for(int row = 0; row<3; row++)            {                if(board[row][column]== playerChoice)                    count++;                else                    count = 0;            }            if(count == 3)                return true;        }        if(board[1][1]==board[0][0]&& board[1][1]==board[2][2])            return true;        if(board[1][1]==board[0][2]&& board[1][1]==board[2][0])            return true;        return false;    }    public static void printBoard(char board[][])    {                for(int i=0; i<3; i++)        {            for(int j=0; j<3; j++)            {                System.out.print(board[i][j] + " ");                            }                System.out.println();        }    }        public static void placeMarker(char playerChoice, char[][]board, int position)    {        switch(position)        {            case 1:                board[0][0] = playerChoice;                break;            case 2:                board[0][1] = playerChoice;                break;            case 3:                board[0][2] = playerChoice;                break;            case 4:                board[1][0] = playerChoice;                break;            case 5:                board [1][1] = playerChoice;                break;            case 6:                board [1][2] = playerChoice;                break;            case 7:                board [2][0] = playerChoice;                break;            case 8:                board [2][1] = playerChoice;                break;            case 9:                board [2][2] = playerChoice;                break;        }    }    public static boolean spotTaken(char board[][], int position)    {        switch(position)        {            case 1:                if(board[0][0]=='X'||board[0][0]=='O')                    return true;                        break;            case 2:                if(board[0][1]=='X'||board[0][1]=='O')                    return true;                        break;            case 3:                if(board[0][2]=='X'||board[0][2]=='O')                    return true;                        break;            case 4:                if(board[1][0]=='X'||board[1][0]=='O')                    return true;                        break;            case 5:                if(board[1][1]=='X'||board[1][1]=='O')                    return true;                        break;            case 6:                if(board[1][2]=='X'||board[1][2]=='O')                    return true;                        break;            case 7:                if(board[2][0]=='X'||board[2][0]=='O')                    return true;                        break;            case 8:                if(board[2][1]=='X'||board[2][1]=='O')                    return true;                        break;            case 9:                if(board[2][2]=='X'||board[2][2]=='O')                    return true;                        break;                        default:                            System.out.println("Unavailable choice. Please pick again.");                    return false;        }                    return false;    }    public static void main(String args[])    {              char[][]board =                {                {'1', '2', '3'},                {'4', '5', '6'},                {'7', '8','9'}};                char playerX='X';        char playerO='O';                boolean playerMove;        int position;        char currentPlayer=playerX;                Scanner input = new Scanner(System.in);                printBoard(board);        System.out.println();        System.out.print("You will select your moves based on the numbers displayed above.");                int countTurn = 0;                while(!winGame(playerO, board) && !winGame(playerO, board) && countTurn<9)        {                      System.out.println();            System.out.print("It's " + currentPlayer + "'s turn:\n");                      playerMove =false;                        while(!playerMove)            {                position=input.nextInt();                if(position<1 || position >9 || spotTaken(board, position))                {                    System.out.println("Spot taken. Please pick another number.");                }                else                {                  placeMarker(currentPlayer, board, position);                  playerMove=true;                                    printBoard(board);                }            }            if(currentPlayer==playerX)                currentPlayer = playerO;            else                currentPlayer = playerX;            System.out.print("\n");                        countTurn++;            }            if(winGame(playerX, board))                System.out.println("We have a winner: X");            else if(winGame(playerO, board))                System.out.println("We have a winner: O");            else                System.out.println("It's a tie game!");     }     }

I have been referencing the class book for most of this code.  So that is why the static methods. It is just what the book shows.  I have never used Java before and this is the 5th week of my course. So everything is still pretty new to me. Thanks for the help!  It is appreciated.

Hey all!  So I have written a basic tic-tac-toe game and all seems to be well except the board display.  It should display as follows:
1 2 3
4 5 6
7 8 9
But is coming out 123456789.
For the life of me I can not figure out what I did wrong. Any hints or pointers would be appreciated greatly. Thanks!
Here is my code:
package tictactoe; import java.util.Scanner; public class TicTacToe {      public static boolean winGame(char playerChoice, char[][]board)    {        int count=0;        for(int row = 0; row<3; row++)        {            count = 0;            for(int column = 0; column<3; column++)            {               if(board[row][column]==playerChoice)                   count++;               else                   count = 0;            }            if (count == 3)                return true;        }        for(int column = 0; column<3; column++)        {            count = 0;            for(int row = 0; row<3; row++)            {                if(board[row][column]== playerChoice)                    count++;                else                    count = 0;            }            if(count == 3)                return true;        }        if(board[1][1]==board[0][0]&& board[1][1]==board[2][2])            return true;        if(board[1][1]==board[0][2]&& board[1][1]==board[2][0])            return true;        return false;    }    public static void boardDisplay(char board[][])    {        for(int i=0; i<3; i++)        {            for(int j=0; j<3; j++)            {                System.out.print(board[i][j] + "");            }        }    }        public static void placeMarker(char playerChoice, char[][]board, int position)    {        switch(position)        {            case 1:                board[0][0] = playerChoice;                break;            case 2:                board[0][1] = playerChoice;                break;            case 3:                board[0][2] = playerChoice;                break;            case 4:                board[1][0] = playerChoice;                break;            case 5:                board [1][1] = playerChoice;                break;            case 6:                board [1][2] = playerChoice;                break;            case 7:                board [2][0] = playerChoice;                break;            case 8:                board [2][1] = playerChoice;                break;            case 9:                board [2][2] = playerChoice;                break;        }    }    public static boolean spotTaken(char board[][], int position)    {        switch(position)        {            case 1:                if(board[0][0]=='X'||board[0][0]=='O')                    return true;                        break;            case 2:                if(board[0][1]=='X'||board[0][1]=='O')                    return true;                        break;            case 3:                if(board[0][2]=='X'||board[0][2]=='O')                    return true;                        break;            case 4:                if(board[1][0]=='X'||board[1][0]=='O')                    return true;                        break;            case 5:                if(board[1][1]=='X'||board[1][1]=='O')                    return true;                        break;            case 6:                if(board[1][2]=='X'||board[1][2]=='O')                    return true;                        break;            case 7:                if(board[2][0]=='X'||board[2][0]=='O')                    return true;                        break;            case 8:                if(board[2][1]=='X'||board[2][1]=='O')                    return true;                        break;            case 9:                if(board[2][2]=='X'||board[2][2]=='O')                    return true;                        break;                        default:                            System.out.println("Unavailable choice. Please pick again.");                    return false;        }                    return false;    }    public static void main(String args[])    {        char[][]board=                {                {'1', '2', '3'},                {'4', '5', '6'},                {'7', '8', '9'}};                char playerX='X';        char playerO='O';                boolean playerMove;        int position;        char currentPlayer=playerX;                Scanner input = new Scanner(System.in);                boardDisplay(board);        System.out.println();        System.out.println("You will select your moves based on the numbers displayed above.");                int countTurn=0;                while(!winGame(playerO, board) && !winGame(playerO, board) && countTurn<9)        {            System.out.println("It's " + currentPlayer + "'s turn.\n");            boardDisplay(board);            playerMove =false;                        while(!playerMove)            {                position=input.nextInt();                if(position<1 || position >9 || spotTaken(board, position))                {                    System.out.println("Spot taken. Please pick another number.");                }                else                {                  placeMarker(currentPlayer, board, position);                  playerMove=true;                }            }            if(currentPlayer==playerX)                currentPlayer = playerO;            else                currentPlayer = playerX;            System.out.println("\n");                        countTurn++;            }            if(winGame(playerX, board))                System.out.println("We have a winner: X");            else if(winGame(playerO, board))                System.out.println("We have a winner: O");            else                System.out.println("It's a tie game!");     }     }
And here is the outcome when I run it:
run: 123456789 You will select your moves based on the numbers displayed above. It's X's turn. 1234567895 It's O's turn. 1234X6789BUILD STOPPED (total time: 53 seconds)

Hello again all!  I am getting an error message and my code will not compile. I can not seem to figure out why. So any pointers in the right direction would be appreciated. The object of this program is to request user input, then return the input along with medication dosages based on the user's input. As I have mentioned before I am very new to Java. I am having some issues with the Java class I am in since there is really no instructor guidance. I  was told to purchase a book and given assignments that are not corresponding to the information in the book as we go. So I apologize for the funky code and thanks in advance for the pointers.
The error message that is showing up when I attempt to run my code is:

Exception in thread "main" java.lang.UnsupportedOperationException: Not supported yet.
at pet.Pet.<init>(Pet.java:15)
at pet.PetDemo.main(PetDemo.java:155)
C:\Users\Violettwilight\AppData\Local\NetBeans\Cache\8.1\executor-snippets\run.xml:53: Java returned: 1
BUILD FAILED (total time: 0 seconds)

And my code is as follows ( I should mention a large chunk of this code has been copied from source code from the course book-per professors instructions. I just had to make a few tweeks):
package pet; import java.util.Scanner; public class PetDemo {    private String name;    private int age;    private double weight;    private boolean speciesDog;        public String ToString( )    {        return ("Name: " + name + "Type" + speciesDog + " Age: " + age + " years"                       + "\nWeight: " + weight + " pounds");    }    public PetDemo(String initialName, boolean speciesDog, int initialAge,                                          double initialWeight)    {        name = initialName;        if ((initialAge < 0) || (initialWeight < 0))        {            System.out.println("Error: Negative age or weight.");            System.exit(0);        }        else        {            age = initialAge;            weight = initialWeight;            speciesDog = true;        }    }    public void set(String newName, int newAge, double newWeight, boolean type)    {        name = newName;        if ((newAge < 0) || (newWeight < 0))        {            System.out.println("Error: Negative age or weight.");            System.exit(0);        }        else        {            age = newAge;            weight = newWeight;            speciesDog = type;        }    }    public PetDemo(String initialName)    {        name = initialName;        age = 0;        weight = 0;    }    public void setName(String newName)    {        name = newName;    }    public PetDemo(int initialAge)    {        name = "No name yet.";        weight = 0;        if (initialAge < 0)        {            System.out.println("Error: Negative age.");            System.exit(0);        }        else            age = initialAge;    }    public void setAge(int newAge)    {        if (newAge < 0)        {            System.out.println("Error: Negative age.");            System.exit(0);        }        else            age = newAge;    }    public PetDemo(double initialWeight)    {        name = "No name yet";        age = 0;        if (initialWeight < 0)        {            System.out.println("Error: Negative weight.");            System.exit(0);        }        else            weight = initialWeight;    }    public void setWeight(double newWeight)    {        if (newWeight < 0)        {            System.out.println("Error: Negative weight.");            System.exit(0);        }        else            weight = newWeight;    }    public PetDemo( )    {        name = "No name yet.";        age = 0;        weight = 0;    }    public String getName( )    {        return name;    }    public int getAge( )    {        return age;    }    public double getWeight( )    {        return weight;    }    public double acepromazine()    {        if(speciesDog)            return(weight/2.2) * (0.03/10);        else            return (weight/2.2) * (0.002/10);    }    public double carprofen()    {        if(speciesDog)            return (weight /2.2) * (0.5/12);        else            return (weight/2.2) * (0.25/12);    }    public static void main(String[] args)    {        Pet usersPet = new Pet("Jane Doe");                System.out.println("My records on your pet are incomplete.");        System.out.println("Here is what they currently say:");        System.out.println("");        Scanner input = new Scanner(System.in);        System.out.println("Please enter the pet's name:");        String name = input.nextLine( );        System.out.println("Is your pet a dog? (Y/N);");        boolean speciesDog;        String choice = input.nextLine();        if(choice.equalsIgnoreCase("y"))           speciesDog = true;        else           speciesDog = false;              System.out.println("Please enter the pet's age:");        int age = input.nextInt( );        System.out.println("Please enter the pet's weight:");        double weight = input.nextDouble( );                usersPet.set(name, speciesDog, age, weight);          System.out.println("My records now say:");        System.out.println(usersPet);        System.out.println("Dose of Carprofen: " + usersPet.carprofen());        System.out.println("Dose of Acepromazine: " + usersPet.acepromazine());                  } }

Hi again all! So I have to write a program that randomly rolls a set of dice 10,000 times.  If the roll produces a total of 7 or 11 it is considered a win. Any other number (2, 3, 4, 5, 6, 8, 9, 10, and 12) is considered a loss. The output of the program should state the total wins and total losses as well as a probability. The problem I am having is that my code appears to be producing wins only.  Here is my code so far:


{         public static void main(String[] args)    {                int die1;        int die2;        int total;                die1 = (int)(Math.random()*6) + 1;        die2 = (int)(Math.random()*6) + 1;        total = die1 + die2;        int win = 0;        int lose = 0;                        for (int i = 0; i < 10000; i ++)        {                                  if (total == 7 || total == 11)                            win += 1;                                        else if (total == 2 || total == 3 || total == 4 ||                     total == 5 || total == 6 || total == 8 ||                     total == 9 || total == 10 || total == 12)                              lose += 1;                                                      }                    double P = (win * 1.0)/(win + lose);         System.out.println("In the simulation, we won "+ win + " times and lost "                            + lose + " times, for a probability of "+ P);    }

Thanks for the help all! I am still having a little trouble however.  It is indeed >0.01. And according to the homework instructions the out put should appear exactly as I listed it in my initial question.  The number 15 is just used as an example when running.  When I run the program I currently have, and use the number 15 when doing so, it is only printing 1 current guess.  Here is an update of my code:

import java.util.Scanner; public class Chapter3Problem1 {      public static void main(String[] args)    {                Scanner input = new Scanner(System.in);            double n, sr, guess, estsr;      System.out.println("This program estimates square roots.");                System.out.println("Enter an interger to estimate the square root of:");        n = input.nextDouble();                guess = n/2;                while (true)        {            estsr = guess;            sr = n/guess;            guess = (guess + sr)/2;                 if (guess/estsr >= 0.99 && guess/estsr <= 1.01 &&)  break;                }        

Hi everyone! New to Java and have a homework question. I have created a program for square root and it appears to be working correctly. My professor has now requested the program keep looping until: "((old guess-guess)/old guess) is >0.01.  He would like the output to look as follows(using the number 15 as an example):
This program estimates square roots:
Enter an integer to estimate the square root of:
15
Current guess: 4.75
Current guess: 3.9539473684210527
Current guess: 3.8738122865399776
Current guess 3.872983434898095

The estimated square root of 15 is:  3.87

Any help on how to create this output would be great.   Thanks in advance!
Here is my code thus far:

package chapter3problem1; import java.util.Scanner; public class Chapter3Problem1 {      public static void main(String[] args)    {                Scanner input = new Scanner(System.in);            double n, squrt, guess, estsqrt;        System.out.println("This program estimates square roots.");                System.out.println("Enter an interger to estimate the square root of:");        n = input.nextDouble();                guess = n/2;                while (true)        {            estsqrt = guess;            squrt = n/guess;            guess = (guess + squrt)/2;                 if (guess/estsqrt >= 0.99 && guess/estsqrt <= 1.01)  break;        }            System.out.println("The estimated square root of " + n +                        " is " + estsqrt);            System.out.println(Math.round(100 * guess)/100.0);    }