Connect Four GUI Help needed

**Hobbs** · December 9th, 2012, 04:49 PM

Hi, my name is Hobbs and I'm obviously new to these forums. Im a beginner Java student who right now is in a bit of trouble. For my final project I am suppose to make a connect four game complete with GUI. Unfortunately we were not taught GUI in the class and the only chapter in the book tells us how to make a window with buttons. I think the rest of my code is good but I have no idea how to make the game board to show pieces and have it work with my array and such. Any help is appreciated.

Link to Code
import java.awt.*; import java.awt.event.*; import javax.swing.*; import java - Pastebin.com

**curmudgeon** · December 9th, 2012, 06:01 PM

You'll want to post your pertinent code here in the forum for all to see as many will not click on links. If you do post this, please be sure to use [code] [/code] tags per the forum FAQ.

**Hobbs** · December 9th, 2012, 06:14 PM

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.MouseInputListener;
 
public class Project {
 
  public static void main(String args[]){
   boolean continuePlay = true;
   int player1Score = 0;
   int player2Score = 0;
 
 
   JFrame game = new Connect4(); //call the gameboard
  }
 }
 
class Connect4 extends JFrame
{
 final static int NUMROWS = 6;
 final static int NUMCOLUMNS = 7;
 final int EMPTY = 0;
 static int currentPlayer = 0;
 int playerNumber = 1;
 static int[][] gameboard = new int[NUMCOLUMNS][NUMROWS];
 int x;
 
 //create the game board GUI
 private JFrame board;
 
 //create a place in the game board for the pieces
 private JLabel[][] grid;
 
 //Constructor (Make the Game Board)
 public Connect4()
 {
 
  //set the game board to blank
  for ( int y = 0 ; y < NUMROWS ; y++ ) 
  {
   for ( int x = 0 ; x < NUMCOLUMNS ; x++)
   {
    gameboard[x][y] = EMPTY ;
   }
  }
 
  //create a GUI
  board = new JFrame("Connect 4");
  JPanel panel = (JPanel) board.getContentPane();
  board.setContentPane(panel);
 
  // 10 x 10 for each disk and then 10 x 10 for the buttons
  board.setSize(750 , 750);
  board.setVisible(true);
  //panel.setLayout(new GridLayout( (NUMROWS + 1),NUMCOLUMNS));
  grid = new JLabel[NUMCOLUMNS][NUMROWS];
 
  //create the individual Jlabels
  for (int y = 0 ; y < NUMROWS ; y++)
  {
   for ( int x = 0 ; x < NUMCOLUMNS ; x++)
   {
    grid[x][y] = new JLabel();
   // panel.add(grid[x][y]);
   }
  }
 
  //create buttons above the columns
  JButton jbtcol0 = new JButton("Column 1");
  JButton jbtcol1 = new JButton("Column 2");
  JButton jbtcol2 = new JButton("Column 3");
  JButton jbtcol3 = new JButton("Column 4");
  JButton jbtcol4 = new JButton("Column 5");
  JButton jbtcol5 = new JButton("Column 6");
  JButton jbtcol6 = new JButton("Column 7");
 
  //add buttons to the board
  JPanel buttonPanel = new JPanel();
  buttonPanel.add(jbtcol0);
  buttonPanel.add(jbtcol1);
  buttonPanel.add(jbtcol2);
  buttonPanel.add(jbtcol3);
  buttonPanel.add(jbtcol4);
  buttonPanel.add(jbtcol5);
  buttonPanel.add(jbtcol6);
 
  //add panel to the game board
  board.add(buttonPanel);
 
  //Register Listeners for the buttons
  Column_1ListenerClass listener0 = new Column_1ListenerClass();
  Column_2ListenerClass listener1 = new Column_2ListenerClass();
  Column_3ListenerClass listener2 = new Column_3ListenerClass();
  Column_4ListenerClass listener3 = new Column_4ListenerClass();
  Column_5ListenerClass listener4 = new Column_5ListenerClass();
  Column_6ListenerClass listener5 = new Column_6ListenerClass();
  Column_7ListenerClass listener6 = new Column_7ListenerClass();
  jbtcol0.addActionListener(listener0);
  jbtcol1.addActionListener(listener1);
  jbtcol2.addActionListener(listener2);
  jbtcol3.addActionListener(listener3);
  jbtcol4.addActionListener(listener4);
  jbtcol5.addActionListener(listener5);
  jbtcol6.addActionListener(listener6);
 
 }
 
 //reset the game board
 public void reset(){
  for( int y = 0 ; y < NUMROWS ; y++)
  {
   for ( int x = 0 ; x < NUMCOLUMNS ; x++)
   {
    //Game logic to blank
    gameboard[x][y] = EMPTY;
 
    //GUI update to blank
   }
  }
 }
 
  public static void changePlayer()
  {
   if (currentPlayer == 0) 
     currentPlayer = 1;
   else if (currentPlayer == 1)
     currentPlayer = 2;
   else currentPlayer = 1;
  }
 
  public static boolean canDropDisk ( int x )
  {
   if ( gameboard[x][0] == 0) 
     return true;
   else 
     return false;
  }
 
  public int diskLands(int x)
  {
   for ( int y = NUMROWS ; y <= 0 ; y-- )
   {
    if (gameboard[y][x] == 0) 
      return y;
    }
 
   return 0;
   }
 
  public static void dropDisk(int x)
  {
   //update array
   for ( int y = NUMROWS ; y <=0 ; y--)
   {
    if(gameboard[y][x] == 0)
    {
     gameboard[y][x] = currentPlayer;
    }
   }
   changePlayer();
  }
 
  public boolean didWin()
  {
   int numMatches;
 
   // check horizontally
   for ( int y = 0 ; y < NUMROWS ; y++)
   {
    numMatches = 0;
    for ( int x = 0 ; x + 1 < NUMCOLUMNS ; x++)
    {
     if ( ( gameboard[y][x] == gameboard[y][x+1]) && (gameboard[y][x] > 0) ) numMatches++;
     if (numMatches == 4)
       return true;
    }
   }
 
   //check vertically
   for ( int x = 0 ; x < NUMCOLUMNS ; x++)
   {
    numMatches = 0;
    for ( int y = 0 ; y + 1 < NUMROWS ; y++)
    {
    if ( ( gameboard[y][x] == gameboard[y+1][x]) && (gameboard[y][x] > 0 )) numMatches++;
    if ( numMatches == 4) 
      return true;
    }
   }
 
   //check right slanted diagonal
   for ( int y = 3 ; y < NUMROWS ; y++)
   {
    numMatches = 0;
    for ( int x = 0 ; x < 4 ; x++)
    {
     if ((gameboard[y][x] == gameboard[y+1][x+1]) && (gameboard [y][x] == gameboard[y+2][x+2]) && (gameboard[y][x] == gameboard[y+3][x+3]) && (gameboard[y][x] > 0)) 
       return true;
    }
   }
 
   //check left slanted diagonal
   for ( int y = 3 ; y < NUMROWS ; y ++)
   {
    numMatches = 0;
    for ( int x = 3 ; x < NUMCOLUMNS ; x++)
    {
     if ((gameboard[y][x] == gameboard[y-1][x-1]) && (gameboard [y][x] == gameboard[y-2][x-2]) && (gameboard[y][x] == gameboard[y-3][x-3]) && (gameboard[y][x] > 0)) 
       return true;
    }
   }
 
   return false;
 
  }
 
  public int whoWon()
  {
   int numMatches;
   int matchingNumber = 0;
 
   // check horizontally
   for ( int y = 0 ; y < NUMROWS ; y++)
   {
    numMatches = 0;
    for ( int x = 0 ; x + 1 < NUMCOLUMNS ; x++){
     if ( ( gameboard[y][x] == gameboard[y][x+1]) && (gameboard[y][x] > 0) )
     {
      numMatches++;
      matchingNumber = gameboard[y][x];
     }
     if (numMatches == 4) return matchingNumber;
    }
   }
 
   //check vertically
   for ( int x = 0 ; x < NUMCOLUMNS ; x++)
   {
    numMatches = 0;
    for ( int y = 0 ; y + 1 < NUMROWS ; y++)
    {
    if ( ( gameboard[y][x] == gameboard[y+1][x]) && (gameboard[y][x] > 0 )) 
    {
     numMatches++;
     matchingNumber = gameboard[y][x];
    }
    if ( numMatches == 4) return matchingNumber;
    }
   }
 
   //check right slanted diagonal
   for ( int y = 3 ; y < NUMROWS ; y++)
   {
    numMatches = 0;
    for ( int x = 0 ; x < 4 ; x++){
     if ((gameboard[y][x] == gameboard[y+1][x+1]) && (gameboard [y][x] == gameboard[y+2][x+2]) && (gameboard[y][x] == gameboard[y+3][x+3]) && (gameboard[y][x] > 0)) 
       return (gameboard[y][x]);
    }
   }
 
   //check left slanted diagonal
   for ( int y = 3 ; y < NUMROWS ; y ++)
   {
    numMatches = 0;
    for ( int x = 3 ; x < NUMCOLUMNS ; x++)
    {
     if ((gameboard[y][x] == gameboard[y-1][x-1]) && (gameboard [y][x] == gameboard[y-2][x-2]) && (gameboard[y][x] == gameboard[y-3][x-3]) && (gameboard[y][x] > 0)) 
       return (gameboard[y][x]);
    }
   }
 
   return matchingNumber;
  }
 
}
 
class Disk extends JLabel{
 
 public void animateFall(int column , int row, int player){
  //create a disk that starts above the top row in that column and falls to the desired row
  repaint();
 }
 
 protected void paintComponent(Graphics G){
 
 }
}
 
class Winner extends JLabel{
 
}
 
 
class Column_1ListenerClass implements ActionListener{
 public void actionPerformed(ActionEvent e){
  if (Connect4.canDropDisk(0) ){
   Connect4.dropDisk(0);
  }
 }
}
 
class Column_2ListenerClass implements ActionListener{
 public void actionPerformed(ActionEvent e){
  if (Connect4.canDropDisk(1) ){
   Connect4.dropDisk(1);
  }
 }
}
 
class Column_3ListenerClass implements ActionListener{
 public void actionPerformed(ActionEvent e){
  if (Connect4.canDropDisk(2) ){
  Connect4.dropDisk(2); 
  }
 }
}
 
class Column_4ListenerClass implements ActionListener{
 public void actionPerformed(ActionEvent e){
  if (Connect4.canDropDisk(3) ){
   Connect4.dropDisk(3);
  }
 }
}
 
class Column_5ListenerClass implements ActionListener{
 public void actionPerformed(ActionEvent e){
  if (Connect4.canDropDisk(4) ){
   Connect4.dropDisk(4);
  }
 }
}
 
class Column_6ListenerClass implements ActionListener{
 public void actionPerformed(ActionEvent e){
  if (Connect4.canDropDisk(5) ){
   Connect4.dropDisk(5);
  }
 }
}
 
class Column_7ListenerClass implements ActionListener{
 public void actionPerformed(ActionEvent e){
  if (Connect4.canDropDisk(6) ){
   Connect4.dropDisk(6);
  }
 }
}

**Norm** · December 9th, 2012, 07:17 PM

The tutorials are a good place to start for learning how to write GUI:
Trail: Creating a GUI With JFC/Swing (The Java™ Tutorials)

**Hobbs** · December 9th, 2012, 09:04 PM

Thanks. Il check that out and ask more questions if i have them

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