KeyListener..for beginners..please help me

hi, im new to java..i think that this thing is simple to you guys..im trying to make a program where there is a ball bouncing around the screen..theres 3 walls one on the left one on the right and the other on top..there should be a moving catcher at the bottom..which should be controlled by the keyboard..
i already made the catcher..my only problem is..i dont know how to make it move..
by the way..i'm using threading..
it would be nice if you can post even a simple example of threading with keylistener even just left and right so i would know how to apply it..
i hope that someone there would help beginners like me, it would really be a big help..
thank you very much!
-dennis

Hi Madhuama, I'll try to give you a hand with this. First off, what OS is running on your notebook, what game are you attempting to play, and how is it not working? Is it not installing?
Thanks,
Fenian Frank
I work on behalf of HP

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URGENT FIX MY Connect Four game for Wednsday PLEASE HELP

I am using an APPLET and i want to use JOptionpane it didnt work when i used it in the paint method. So i want to make a runner to make the program work. I don't know why the Graphics g = new Graphics isnt working PLEASE HELP. Email the revised code to my email at [email protected]. URGENT FOR TOMORROW PLEASE HELP. should i have a spearate class for the runner, just email me please if you can help.
import javax.swing.JApplet;
import java.applet.*;
import java.awt.Graphics;
import java.awt.Color;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.JOptionPane;
public class Board extends JApplet
// the grid used for storing the game layout.
private int[][] grid;
// the player whose turn it is.
private int currentPlayer;
public final int player1=1;
public final int player2=2;
private int place1=5;
private int place2=5;
private int place3=5;
private int place4=5;
private int place5=5;
private int place6=5;
private int place7=5;
public static void main()
int column1;
int column2;
String name1;
String name2;
Graphics g=new Graphics();
Board test= new Board();
boolean wait=true;
while(wait)
String starts=JOptionPane.showInputDialog("Are you ready? \n (yes or no)");
starts.toLowerCase();
if(starts.equals("yes"))
wait=false;
name1=JOptionPane.showInputDialog("Enter Player 1's Name");
name2 = JOptionPane.showInputDialog("Enter Player 2's Name");
test.paintBoard(true,g);
while(!test.done() || !test.hasWon(g,player1) || !test.hasWon(g,player2))
column1=0;
while(column1>0 && column1<8)
column1=Integer.parseInt(JOptionPane.showInputDialog(name1+" what column do you choose?"));
test.place(player1, column1,g);
if(!test.done() || !test.hasWon(g,player1))
column2=0;
while(column2>0 && column2<8)
column2=Integer.parseInt(JOptionPane.showInputDialog(name1+" what column do you choose?"));
test.place(player2, column2,g);
public Board()
// create the grid
grid = new int[7][6];
// initialize the gridc
for (int row=0; row<6; row++)
for (int column=0; column<7; column++)
// set the position to a default value
grid[column][row] = 0;
public boolean done()
boolean flags =true;
for (int row=0; row<6; row++)
for (int column=0; column<7; column++)
if(grid[column][row] == 0)
flags=false;
return flags;
public void paint(Graphics g)
public void paintBoard(boolean flag, Graphics g)
int index= 0;
g.setColor(Color.YELLOW);
g.fillRect(0, 80, 700,700);
g.setColor(Color.WHITE);
//draws spaces
for(int y =100; y<700; y=y+100)
for(int x =10; x<700; x=x+100)
if(flag==false)
index++;
if(index%2==0)
g.setColor(Color.RED);
else
g.setColor(Color.BLACK);
else
g.setColor(Color.WHITE);
g.fillOval(x,y,80,80);
TextField column =new TextField(10);
if(flag==false)
g.setFont(new Font("Times New Roman", Font.BOLD,24));
g.setColor(Color.YELLOW);
g.drawString("C",45,245);
g.drawString("O",145,245);
g.drawString("N",245,245);
g.drawString("N",345,245);
g.drawString("E",445,245);
g.drawString("C",545,245);
g.drawString("T",645,245);
g.drawString("F",145,145);
g.drawString("U",145,345);
g.drawString("R",145,445);
g.setColor(Color.BLUE);
g.drawString("START",512,548);
public void paintFinish(Graphics g, int player)
int index= 0;
g.setColor(Color.YELLOW);
g.fillRect(0, 80, 700,700);
g.setColor(Color.WHITE);
//draws spaces
for(int y =100; y<700; y=y+100)
for(int x =10; x<700; x=x+100)
index++;
if(player==1)
g.setColor(Color.RED);
else
g.setColor(Color.BLACK);
g.fillOval(x,y,80,80);
public boolean hasWon(Graphics g, int player)
boolean status = false;
// check for a horizontal win
for (int row=0; row<6; row++)
for (int column=0; column<4; column++)
if (grid[column][row] != 0 &&
grid[column][row] == grid[column+1][row] &&
grid[column][row] == grid[column+2][row] &&
grid[column][row] == grid[column+3][row] &&
grid[column][row] == player)
status = true;
// check for a vertical win
for (int row=0; row<3; row++)
for (int column=0; column<7; column++)
if (grid[column][row] != 0 &&
grid[column][row] == grid[column][row+1] &&
grid[column][row] == grid[column][row+2] &&
grid[column][row] == grid[column][row+3]&&
grid[column][row] == player)
status = true;
// check for a diagonal win (positive slope)
for (int row=0; row<3; row++)
for (int column=0; column<4; column++)
if (grid[column][row] != 0 &&
grid[column][row] == grid[column+1][row+1] &&
grid[column][row] == grid[column+2][row+2] &&
grid[column][row] == grid[column+3][row+3]&&
grid[column][row] == player)
status = true;
// check for a diagonal win (negative slope)
for (int row=3; row<6; row++)
for (int column=0; column<4; column++)
if (grid[column][row] != 0 &&
grid[column][row] == grid[column+1][row-1] &&
grid[column][row] == grid[column+2][row-2] &&
grid[column][row] == grid[column+3][row-3]&&
grid[column][row] == player)
status = true;
if(status)
paintFinish(g, player);
return status;
public void place(int player, int column, Graphics g)
int index=0;
if(column==1)
index=place1;
if(column==2)
index=place2;
if(column==3)
index=place3;
if(column==4)
index=place4;
if(column==5)
index=place5;
if(column==6)
index=place6;
if(column==7)
index=place7;
grid[column-1][index]=player;
if(player==player1)
g.setColor(Color.RED);
if(player==player2)
g.setColor(Color.BLACK);
g.fillOval((column*100)+10,(index+1)*100,80,80);
if(column==1)
place1--;
if(column==2)
place2--;
if(column==3)
place3--;
if(column==4)
place4--;
if(column==5)
place5--;
if(column==6)
place6--;
if(column==7)
place7--;
}

gamefreak1192 wrote:
I am using an APPLET and i want to use JOptionpane it didnt work when i used it in the paint method. So i want to make a runner to make the program work. I don't know why the Graphics g = new Graphics isnt working PLEASE HELP. Email the revised code to my email at [email protected] URGENT FOR TOMORROW PLEASE HELP. should i have a spearate class for the runner, just email me please if you can help.
This is bloody ridiculous. You want somebody to do your work for you, you can't be bothered to carry on a discussion here and ask for private email, and you expect somebody else to make your urgency (i.e. lousy time management) their problem. You got big brass ones, kid.

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End user and manager not possible- we can not train so many people. Functional team is refusing since its a lot of work. Please help me with pointers to any best practices documents.
Thanks!!!!

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JS

Don,
I followed Adil Siddiqui's Blog and it worked!!!!
Add Following code to web.config file
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<sectionGroup name=“businessObjects“>
<sectionGroup name=“crystalReports“>
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</sectionGroup>
</configSections>
<businessObjects>
<crystalReports>
<rptBuildProvider>
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<crystalReportViewer>
<add key=“ResourceUri” value=“~/crystalreportviewers13“ />
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</crystalReports>
</businessObjects>
NOTE: “<add key=“ResourceUri” value=“/crystalreportviewers13“ />” worked without the ~ sign.
Click the link below for the complete post:
Visual Studio 2012 Crystal Report not working on Windows Server 2012/ 0x800a1391 &#8211; JavaScript runtime error: &…
Thank you Don for your help.
JS

KeyListener..for beginners..please help me

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