program problem

[amith]

i just want to load two images in the frame but iam getting only one image at a time can u give me logic for writing multiple images in frame at same time and also give the logic for generating random images for this multiple images
import java.awt.*;
import javax.swing.*;
class a extends JComponent implements Runnable
{
Image q[]=new Image[2];
int f=0;
int x=200,y=200;

int c;
public void paint(Graphics g)
{
Image r=q[f];
g.drawImage(r,x,y,this);
}

public void run()
{
q[0]=new ImageIcon("red.png").getImage();
q[1]=new ImageIcon("blue.png").getImage();

try
{
while(true)
{
f=(f+1)%q.length;

repaint();

Thread.sleep(1000);
}}
catch(InterruptedException m)
{
}
}
}

class b
{
public static void main(String args[])
{
a x=new a();
JFrame s= new JFrame(" GAME ");
s.getContentPane().add(x);
s.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
s.setVisible(true);
s.setSize(800,800);
s.setResizable(false);
(new Thread(x)).start();
}
}

[Eranga]

Randomly change means, display one image after the other?

[amith]

generating both the images randomly i a frame example i hav red and blue
randomly generate possible combinations in frame red red ,red blue, blue red, blue blue

[Eranga]

So randomly select the array index of you images. Use Random class. Got it?

[Eranga]

According to your application do it as follows.

    public void run() {
        q[0] = new ImageIcon("images\\logo.gif").getImage();
        q[1] = new ImageIcon("images\\RADAR.png").getImage();

        try {
            while(true) {
                //f = ( f + 1 ) % q.length;
                f = randomIndex();
                repaint();

                Thread.sleep(1000);
            }
        }
        catch(InterruptedException m) {
        
        }
    }
    
    public int randomIndex() {
        Random rr = new Random();
        return rr.nextInt(2); // number of images you used
    }

[amith]

in paint method when i give repaint then it draws only one image i,e q[0]
after f ==1 then it only draws q[1] i just want to draw both q[0] and q[1] at the same time can u give me the logic i will make x=x+200 for q[1] so that the images will be side by side

[Eranga]

Did you try my above code?

[Eranga]

in paint method when i give repaint then it draws only one image i,e q[0]
after f ==1 then it only draws q[1] i just want to draw both q[0] and q[1] at the same time can u give me the logic i will make x=x+200 for q[1] so that the images will be side by side

What you really want to do? Display two images at the same time? So what you say at your post #2? Randomly change???

[amith]

see if there is a mistake in telling i apolozise but iam telling u frankly my idea is all about
i jst want to display both the different images at the same time but when iam trying to do that it is displaying any one of the images i just want to display both the images at same time and i also want to generate two random images at same time for i will just give u the picture

[Eranga]

Ok, you can try something different like this. Use two labels in two locations you want. Then add images there randomly selected. I don't think it is difficult.

[hardwired]

import java.awt.*;
import java.awt.image.BufferedImage;
import java.util.Random;
import javax.swing.*;

public class RandomImagesTest extends JPanel {
    BufferedImage[] images;
    Random seed = new Random();
    int leftIndex  = 0;
    int rightIndex = 1;

    RandomImagesTest() {
        makeImages();
        new Thread(runner).start();
    }

    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        int x1 = 50;
        int y1 = 50;
        g.drawImage(images[leftIndex], x1, y1, this);
        int x2 = x1 + images[leftIndex].getWidth() + 20;
        int y2 = y1;
        g.drawImage(images[rightIndex], x2, y2, this);
    }

    private Runnable runner = new Runnable() {
        long delay = 1000;
        boolean animate = true;

        public void run() {
            while(animate) {
                try {
                    Thread.sleep(delay);
                } catch(InterruptedException e) {
                    animate = false;
                }
                int n = images.length;
                leftIndex  = seed.nextInt(n);
                rightIndex = seed.nextInt(n);
                //System.out.printf("leftIndex = %d  rightIndex = %d%n",
                //                   leftIndex, rightIndex);
                repaint();
            }
        }
    };

    private void makeImages() {
        Color[] colors = { Color.red, Color.blue };
        int w = 40, h = 40;
        int type = BufferedImage.TYPE_INT_RGB;
        images = new BufferedImage[colors.length];
        for(int i = 0; i < images.length; i++) {
            images[i] = new BufferedImage(w, h, type);
            Graphics2D g2 = images[i].createGraphics();
            g2.setBackground(colors[i]);
            g2.clearRect(0,0,w,h);
            g2.dispose();
        }
    }

    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(new RandomImagesTest());
        f.setSize(300,300);
        f.setLocation(200,200);
        f.setVisible(true);
    }
}

[amith]

how can i assign image object to g.drawimage for example
Image q=new Image;
g.drawImage(q,x,y,this);
Image m=new Image();
m=g.drawImage(q,x,y,this);

[hardwired]

    protected void paintComponent(...
        ...
        Image q=images[seed.nextInt(images.length)];
        g.drawImage(q,x,y,this);
        Image m=images[seed.nextInt(images.length)];
        g.drawImage(m,x,y,this);
    }

The main problem with doing it this way is that the images may change with every system-initiated repaint event. It is better to assign the images in your event code, viz, in your Runnable implementation, as shown above.