I have a problem with launching my application as applet. The game runs fine as an application.

my applet code:

package net.viped.breakout;

import java.applet.Applet;
import java.awt.GridLayout;

public class GameApplet extends Applet
  Core core = new Core();

  public void init() {
    setLayout(new GridLayout());


  public void start() {

  public void stop() {


javax.imageio.IIOException: Can't read input file!
    at javax.imageio.ImageIO.read(ImageIO.java:1275)
    at net.viped.breakout.ImageLoader.<init>(ImageLoader.java:14)
    at net.viped.breakout.Core.<init>(Core.java:66)
    at net.viped.breakout.GameApplet.<init>(GameApplet.java:8)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at java.lang.Class.newInstance0(Class.java:355)
    at java.lang.Class.newInstance(Class.java:308)
    at sun.applet.AppletPanel.createApplet(AppletPanel.java:807)
    at sun.applet.AppletPanel.runLoader(AppletPanel.java:714)
    at sun.applet.AppletPanel.run(AppletPanel.java:368)
    at java.lang.Thread.run(Thread.java:680)

Code causing error:

        public ImageLoader() {
            try {
                sprites = ImageIO.read(new File("res/Sprites.png"));
            } catch (IOException e) {
                // TODO Auto-generated catch block

Recommended Answers

All 4 Replies


I'm assuming that the Java Content Security Policy is not allowing the applet to read the file. ( if you are running the application through appletviewer etc. )

Or do you have the images and applet bundled in a jar file?

can you tell me how you are going to display sprites on your applet?

i think whenever you are extending Applet class to any other class,
You have to override all the applet life cycle methods in child(inherited) class.

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, learning, and sharing knowledge.