keyboard arrow keys not working

[rahul taiwala]

/*
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 * and open the template in the editor.
 */

package javaapplication4;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import javax.sound.sampled.*;
/**
 *
 * @author rahul
 */
//this is the main logic of the game
public class logic extends JPanel implements MouseMotionListener, MouseListener,KeyListener {
    
brick block[] = new brick[23];
	int px,py,pheight,pwidth,bx,by,bheight,bwidth,height,width,mx=10,my,speedx,speedy,score,balls,bricks;
	boolean started,title,ball=true;
	private Timer timer1,timer2;
        logic(){
            addKeyListener(this);
            title=true;
            //addMouseMotionListener(this);//to recognize mouse movement
            addMouseListener(this);//to recognize mouse event like mouse button pressed
                balls = 3;
                height = 400;
		width = 400;
		pheight = 5;
		pwidth = 50;
		px =200;
		py = width - 50;
                bwidth = 10;
		bheight = 10;
                title=true;
                
        	timer1 = new Timer(16,new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				bx += speedx;
				by += speedy;
				if (bx + bwidth >= width || bx <= 0) {
					speedx = -speedx;//used to check that the ball doesnt cross the boundary
				}
				if (by + bheight >= py && bx + bwidth >= px && bx <= px + pwidth && by <= py || by <= 0) {
					speedy = -speedy;
				}
				for (int i = 0; i < block.length; i++) {
					if (block[i].visible && by <= block[i].y + block[i].height && bx + bwidth >= block[i].x && bx <= block[i].x + block[i].width && by + bheight >= block[i].y) {
						speedy = -speedy;
                                                if(i==15){
                                                    //if brick 15 is broken one extra ball is rewarded
                                                balls=balls+1;
                                                }
                                                block[i].visible = false;
                                                try{
                                                File soundFile = new File("Target.wav");
                                                AudioInputStream audioIn = AudioSystem.getAudioInputStream(soundFile);
                                                Clip clip = AudioSystem.getClip();
                                                clip.open(audioIn);
                                                clip.start();
                                                }catch(Exception e1){}
						++bricks;
                                                score+=10;
						if (bricks == 23) {
							bx = px + pwidth / 2 - bwidth / 2;
							by = py - bheight;
							bricks = 0;
							speedx = 4;
							speedy = -4;
							drawBricks();
							timer1.stop();
							started = false;
						}
					}
				}
				if (by >= height) {
					--balls;
					if (balls > 0) {
						resetBall();
					}
					timer1.stop();
					started = false;
					repaint();
				}
				repaint();
			}
		});
		timer2 = new Timer(500,new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				title = true;
                                ball=true;
				timer2.stop();
			}
		});
               
        }

    @Override
	public void paint(Graphics g) {
           super.paint(g);

           if (title) {

			Font font1 = new Font("Arial", Font.BOLD, 60);
			g.setFont(font1);
			g.setColor(Color.green);
			g.drawString("Ballbreaker",width / 2 - 150,100);
			Font font2 = new Font("Arial", Font.BOLD, 25);
			g.setFont(font2);
			g.drawString("Play Game",width / 2 - 60, 200);
                        g.setColor(Color.red);
                        g.drawString("You have 3 balls",width/2-100,300);
		}
		if(!title){
                    if(balls!=0){
			for (int i = 0; i < block.length; i++) {
				if (block[i].visible) {
					g.setColor(Color.red);
					g.drawRect(block[i].x - 1,block[i].y - 1,block[i].width + 1,block[i].height + 1);
					g.setColor(Color.CYAN);
					g.fillRect(block[i].x,block[i].y,block[i].width,block[i].height);
				}
			}
			g.setColor(Color.black);
			g.fillRect(px,py,pwidth,pheight);
			g.fillArc(bx,by,bwidth,bheight,0,360);
			Font font2 = new Font("Arial", Font.BOLD, 15);
			g.setFont(font2);
                        g.setColor(Color.BLUE);
			g.drawString("Score: "+score,width /2 - 180, 370);
                        g.drawString("Balls: "+balls,width / 2 -100, 370);
                    }
                        switch(balls) {
				case 0:int highscore=0;
                                        try{
                                        File fil = new File("data.txt");
                                        FileReader inputFil = new FileReader(fil);
                                        BufferedReader in = new BufferedReader(inputFil);

                                        String s =in.readLine();

                                        highscore = Integer.parseInt(s); //this is line 19
                                        in.close();
                                        }catch(Exception e){}
                                        if(highscore<score){
                                        try{
                                        BufferedWriter writer = new BufferedWriter(new FileWriter("data.txt"));
                                        writer.write(String.valueOf(score));
                                        
                                       
                                        if (writer != null)
                                           {
                                                 writer.flush();
                                                 writer.close();
                                            }}catch(Exception e){}}
					timer1.stop();
                                        ball=false;
					started = false;
                                        Font font3 = new Font("Arial", Font.BOLD, 25);
                                        g.setFont(font3);
                                        g.drawString("Game Over",width / 2 - 60, 200);
					g.drawString("High Score: "+highscore,width /2 - 60, 250);
                                        g.drawString("Your Score: "+score,width /2 - 60, 300);
					repaint();
					break;

				}
		}
	
    }
	public void drawBricks() {
           //code to draw the bricks,in 1st row 8,2nd row 7,3rd row 8
		for (int i = 0; i < block.length; i++) {
			block[i] = new brick();
			block[i].width = 35;
			block[i].height = 15;
			block[i].visible = true;
			if (i <= 7) {
				if (i > 0) {
					block[i].x = block[i - 1].x + 45;
				}
				else {
					block[i].x = 10;
				}
				block[i].y = 10;
			}
			else if (i <= 14) {
				if (i > 8) {
					block[i].x = block[i - 1].x + 45;
				}
				else {
					block[i].x = 30;
				}
				block[i].y = 30;
			}
			else {
				if (i > 15) {
					block[i].x = block[i - 1].x + 45;
				}
				else {
					block[i].x = 10;
				}
				block[i].y = 50;
			}
		}
                
	}

	public void resetBall() {
		bx = px + pwidth / 2 - bwidth / 2;
		by = py - bheight;
		speedx = 4;
		speedy = -4;
	}
        

public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
if(key == KeyEvent.VK_LEFT) {
//mx = -20;
    if(!title){
    
	px = px-20 ;
        repaint();//- pwidth / 2;
	if (!started) {
		bx = px + pwidth / 2 - bwidth / 2;
	}
   }

repaint();

}

else if(key == KeyEvent.VK_RIGHT) {

mx = 20;
if(!title){

			px += mx ;//- pwidth / 2;
			if (!started) {
				bx = px + pwidth / 2 - bwidth / 2;
			}
                }
		repaint();

}



}

        
public void keyReleased(KeyEvent e) {
int key = e.getKeyCode();
if(key == KeyEvent.VK_LEFT) {

mx = 0;

}

else if(key == KeyEvent.VK_RIGHT) {

mx = 0;

}
}
    public void mouseMoved() {
        //movement of the paddle
		//mx = e.getX();
		//my = e.getY();
		
	}
public void mouseMoved(MouseEvent e) {}
	public void mousePressed(MouseEvent e) {
	
            if(!ball){
                timer2.start();
                
            }
            if (title) {
			title = false;
			drawBricks();
			balls = 3;
			score = 0;
			bricks = 0;
			px = width / 2 - pwidth / 2;
			resetBall();
			repaint();
		}
		else if (!title) {
                        started = true;
			timer1.start();
		}
		
	}
        public void keyTyped(KeyEvent evt) {}
public void mouseReleased(MouseEvent e) { }

	public void mouseEntered(MouseEvent e) { }

	public void mouseExited(MouseEvent e) { }

	public void mouseClicked(MouseEvent e) { }

	public void mouseDragged(MouseEvent e) { }



	
        }

[fred rosenberger]

I'm sorry, but is there a question here?

Generally, the best way to get help on our forum is to provide as much information as possible. Simply posting 300+ lines of code will cause most folks I know to simply skip right over this, as it's too much work. Not only would they have to solve your problem, they'd have to work pretty hard to figure out what your problem is.

Does this compile? do you get error messages? Can you limit the code you post to the relevant segment?

[rahul taiwala]

sorry fred, from next time I will keep your words in mind.
And for this problem it is solved,my panel was not getting focus,just tried to get it using requestfocus() method and it is solved..