uploading random images on an applet window in java

Question

I have been trying to upload an image onto a Java Applet Window but unfortunately it turns out to be blank..Here is the code i have written pls help!

import java.awt.*;
import javax.swing.*;
import java.awt.geom.*;
import java.net.*;
import java.util.*;

public class RandomImages extends JFrame
{
  private Image img;

public void static main(String[] args)
{
  new RandomImages();
}

public RandomImages()
{
  super("Random Images");
  setSize(450,450);
  setVisible(true);
  setResizable(false);
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  Toolkit tk=Toolkit.getDefaultToolkit();
  img=tk.getImage(getURL("Your File Name"));
}

Below is the code that fetches the url of the filename looking for...

private URL getURL(String filename)
{
  URL url=null;
  try{
    url=this.getClass().getResource(filename);
  }
  catch(Exception e) {}
  return url;
}

AffineTransform id=new AffineTransform();

Code for paint component...

public void paint(Graphics g)
{
  super.paint(g);
  Graphics2D g2d=(Graphics2D)g;
  AffineTransform trans=new AffineTransform();
  Random rand=new Random();
  g2d.setColor(Color.BLACK);
  width=getSize().width;
  height=getSize().height;
  g2d.fillRect(0,0,width,height);

Loop for generating random ships on screen

for(int s=0;s<20;s++)
{
  trans.setTransform(id);
  trans.translate(rand.nextInt()%width,rand.nextInt()%height);
  trans.rotate(Math.toRadians(360*rand.nextDouble()));
  double scaled=rand.nextDouble()+1;
  trans.scale(scaled,scaled);
  trans.drawImage(img,trans,this);
}
}

}

1) For better help sooner, post an [SSCCE](http://sscce.org/). 2) One way to get image(s) for an example is to hot-link to the images seen in [this answer](http://stackoverflow.com/a/19209651/418556). — Andrew Thompson, Nov 28 '13 at 06:06

AJ. · Answer 1 · 2013-11-28T09:53:08.403

0

The best way to add image in JFrame is to use JLabel.

Example:

 JLabel image = new JLabel(new ImageIcon("Image.jpg"));

Now add this JLabel(image) into your JFrame.

public RandomImages()
{
  super("Random Images");
  setSize(450,450);
  setVisible(true);
  setLayout(new FlowLayout());//you have not used the Layout
  setResizable(false);
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

  JLabel image = new JLabel(new ImageIcon("Image.jpg"));
  add(image);
}

Another way is to use drawImage() function of Graphics class in paint(Graphics g) function . But you should use paintComponent against paint

edited Nov 28 '13 at 09:53

answered Nov 28 '13 at 07:03

AJ.

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all methods in java starts from lowercase. – alex2410 Nov 28 '13 at 07:08
@nishpystoned are you sure that you have written setLayout(new FlowLayout)? – AJ. Nov 28 '13 at 08:43
@AJ.Nope when i used that it is giving me error saying:"C:\Users\Owner\Documents\java\bitmap\RandomImages.java:21: '(' or '[' expected setLayout(new FlowLayout); ^" – nishpystoned Nov 28 '13 at 09:38
@nishpystoned there is a mistake in my code,, use 'setLayout(new FlowLayout());' sorry for that – AJ. Nov 28 '13 at 09:52
@AJ.Well now there r no errors but its still the same blank view with no images.. – nishpystoned Nov 28 '13 at 10:19
@nishpystoned try to give the absolute path of image in new ImageIcon("Image.jpg") – AJ. Nov 28 '13 at 10:47
@AJ. Well it is still the same blank!! – nishpystoned Nov 28 '13 at 10:57

alex2410 · Answer 2 · 2013-11-28T07:09:34.537

0

1)Instead of using paint(Graphics g) for custom paintings you need to use paintComponent(Graphics arg0) of JComponent. For example draw image on JPanel and the add panel to your frame. Your JFrame isn't a JComponent.

2) As I know public static void main(String[] args) ;)

uploading random images on an applet window in java

2 Answers2