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getting null error when creating icon in JLabel

I have the following package: projectname/src/main/java/net/is/lms/project/frames
In the frame folder there is a java class called testframe and an icon called icontest.png (it's 87x84px)
I have the following code snippet:
package net.is.lms.project.frames;
import javax.swing.*;
public class testframe {
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(530, 600);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
String url = "src/main/java/net/is/lms/project/frames/icontest.png";
ImageIcon icon = new ImageIcon(url);
JLabel label = new JLabel();
label.setIcon(icon);
frame.add(label);
}
}
When I create the frame, no icon gets displayed
I tried different paths and also adding it like that:
URL url = testframe.class.getResource("/net/is/lms/project/frames/icontest.png");

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Have you tried to put the images in the src/main/resources folder and loading them like in this example: link

How do I use a gif file in a Java program?

I'm trying to add a .gif image to a JButton, but can't seem to get the image to load when i run the code. I've included a screenshot. Included is the frame that's created. I'd really appreciate any help that can be provided. Stack is telling me I can't enter images yet, so it created a link for it. I'm also going to enclose the actual code here:
package java21days;
import javax.swing.*;
import java.awt.*;
public class ButtonsIcons extends JFrame {
JButton load, save, subscribe, unsubscribe;
public ButtonsIcons() {
super("Icon Frame");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel panel = new JPanel();
//Icons
ImageIcon loadIcon = new ImageIcon("load.gif");
ImageIcon saveIcon = new ImageIcon("save.gif");
ImageIcon subscribeIcon = new ImageIcon("subscribe.gif");
ImageIcon unsubscribeIcon = new ImageIcon("unsubscribe.gif");
//Buttons
load = new JButton("Load", loadIcon);
save = new JButton("Save", saveIcon);
subscribe = new JButton("Subscribe", subscribeIcon);
unsubscribe = new JButton("Unsubscribe", unsubscribeIcon);
//Buttons To Panel
panel.add(load);
panel.add(save);
panel.add(subscribe);
panel.add(unsubscribe);
//Panel To A Frame
add(panel);
pack();
setVisible(true);
} //end ButtonsIcon Constructor
public static void main(String[] arguments) {
ButtonsIcons ike = new ButtonsIcons();
}
} //end ButtonsIcon Class
enter image description here

The easiest way is.
Label or Jbutton and what ever else supports HTML 3.5
JLabel a = new JLabel("");
add that to your container.
Haven't figured out how to enter code sorry

Displaying an image in a JFrame

I am currently learning Java, and I am stuck with something at the moment.
I was looking for a way to add an image to my JFrame.
I found this on the internet:
ImageIcon image = new ImageIcon("path & name & extension");
JLabel imageLabel = new JLabel(image);
And after implementing it to my own code, it looks like this (this is only the relevant part):
class Game1 extends JFrame
{
public static Display f = new Display();
public Game1()
{
Game1.f.setSize(1000, 750);
Game1.f.setResizable(false);
Game1.f.setVisible(true);
Game1.f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Game1.f.setTitle("Online First Person Shooter");
ImageIcon image = new ImageIcon("C:\\Users\\Meneer\\Pictures\\image.png");
JLabel imageLabel = new JLabel(image);
add(imageLabel);
}
}
class Display extends JFrame
{
}
When running this code, it doesn't give me any errors, but it also doesn't show the picture. I saw some questions and people having the same problem, but their code was completely different from mine, they used other ways to display the image.

You don't need to use another JFrame instance inside the Game JFrame:
Calling setVisible(flag) from the constructor is not preferable. Rather initialize your JFrame from outside and put your setVisible(true) inside event dispatch thread to maintain Swing's GUI rendering rules using SwingUtilities.invokeLater(Runnable)
Do not give size hint by setSize(Dimension) of the JFrame. Rather use proper layout with your component, call pack() after adding all of your relevant component to the JFrame.
Try using JScrollPane with JLabel for a better user experience with image larger than the label's size can be.
All of the above description is made in the following example:
class Game1 extends JFrame
{
public Game1()
{
// setSize(1000, 750); <---- do not do it
// setResizable(false); <----- do not do it either, unless any good reason
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setTitle("Online First Person Shooter");
ImageIcon image = new ImageIcon("C:\\Users\\Meneer\\Pictures\\image.png");
JLabel label = new JLabel(image);
JScrollPane scrollPane = new JScrollPane(label);
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
add(scrollPane, BorderLayout.CENTER);
pack();
}
public static void main(String[] args)
{
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
new Game1().setVisible(true);
}
});
}
}

do this after creating Jlabel
imageLabel.setBounds(10, 10, 400, 400);
imageLabel.setVisible(true);
also set the layout to JFrame
Game.f.setLayout(new FlowLayout);

You are adding the label to the wrong JFrame. Also, move the setVisible() to the end.
import javax.swing.*;
class Game1 extends JFrame
{
public static Display f = new Display();
public Game1()
{
// ....
Game1.f.add(imageLabel);
Game1.f.setVisible(true);
}
}

Also try to use image from resources, and not from hardcoded path from your PC
You can look in here, where sombody asked similar question about images in Jframe:
How to add an ImageIcon to a JFrame?

Your problem in next you add your JLabel to Game1 but you display another Frame(Display f). Change add(imageLabel); to Game1.f.add(imageLabel);.
Recommendations:
1)according to your problem: Game1 extends JFrame seems that Display is also a frame, use only one frame to display content.
2) use pack() method instead of setSize(1000, 750);
3)call setVisible(true); at the end of construction.
4)use LayoutManager to layout components.

JFrame Icon Image Not Working

I have been searching around the internet trying to find out how to add an Icon Image to my JFrame, but I keep getting errors. I understand this has been asked on stack overflow but the solutions are not working for me. Here is my code:
ImageIcon imageIcon = new ImageIcon("src/slime.png");
ImageIcon image = new ImageIcon("src/slime.gif");
JLabel label = new JLabel(image, JLabel.CENTER);
label.setAlignmentX(0);
label.setAlignmentY(0);
label.setIcon(image);
JFrame window = new JFrame("Slime");
window.setVisible(true);
window.setSize(250, 200);
window.setResizable(false);
window.setIconImage(newImageIcon(getClass().getResource("src/slime.png")).getImage());
window.add(label);
here is the error I get:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(ImageIcon.java:205)
at MainJFrame.<init>(MainJFrame.java:39)
at MainJFrame$1.run(MainJFrame.java:18)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:727)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:688)
at java.awt.EventQueue$3.run(EventQueue.java:686)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:697)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Help would be very much appreciated. Note: I have tried window.setIconImage(imageIcon.getImage()); but that doesn't work and makes my other image that I have printed on the screen disapear.

First, just for safety reasons, don't try and make your JFrame in your main method. That is why you are getting some of the static errors from some of the solutions. Static is just a big problem in my opinion because as soon as you make one static, you make them all static. Try and initelize the JFrame in the constructor instead of the main method. Just make a new MainJFrame object in the main method:
public static void main(String[] args){
MainJFrame frame = new MainJFrame();
}
And put all of your code in the constructor, if you don't know what this is, which you should know then this is what one looks like:
public MainJFrame(){
//This is a constructor
//All frame init code in here
}
Then put the same code in there but put a space between the new and ImageIcon in your setIconImage() argument. So the whole constructor should look like this:
public MainJFrame(){
ImageIcon imageIcon = new ImageIcon("src/slime.png");
ImageIcon image = new ImageIcon("src/slime.gif");
JLabel label = new JLabel(image, JLabel.CENTER);
label.setAlignmentX(0);
label.setAlignmentY(0);
label.setIcon(image);
JFrame window = new JFrame("Slime");
window.setVisible(true);
window.setSize(250, 200);
window.setResizable(false);
window.setIconImage(new ImageIcon(getClass().getResource("src/slime.png")).getImage());
window.add(label); }
If that still doesn't work then try to use ImageIO to load the image. This won't work on applets though since it will give you a security error.
window.setIconImage(ImageIO.read(new File("folder/to/file.png")));
You also need to surround this line in a throw/catch block and if you are working in eclipse then make sure the file is in a folder outside of your main package. Other than that you should be good.

Use getClass to get the image:
window.setIconImage(new ImageIcon(
getClass().getResource("src/slime.png")).getImage());
But if you want to add image to your label an then add the label to your frame use this instead:
Image img = (new ImageIcon(getClass().getResource("src/slime.png"))).getImage();
JLabel lblIcon = new JLabel(new ImageIcon(newimg));
window.add(lblIcon);
and if you want to resize the image size to be the size of window do this (put the code before adding it to window):
Image newimg = img.getScaledInstance(window.getWidth() , window.getHeight(), java.awt.Image.SCALE_SMOOTH);// resizing image to the window size
EDIT:
of course you cannot use getClass() in public static void main() method you should put your code somewhere non-static like a class constructor for example.
public class MainForm extends javax.swing.JFrame {
/**
* Creates new form MainForm
*/
public MainForm() {
//put your code here...
window.setIconImage(new ImageIcon(
getClass().getResource("src/slime.png")).getImage());
}
public static void main(String args[]) {
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
new MainForm().setVisible(true);
}
});
}
It is always good to try-catch block to check if you getting the image correctly. albeit in this situation when you are getting the code from inside your packages is not that necessary but if you are going to get any resource from outside of your project make sure of your opening process.

Try this, it has to work
frame.setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("/src/slime.gif")));
You wrote,
newImageIcon()
This might be a method because it compiled for you. I think you might have to write it as new ImageIcon() This might be the problem. The javax.swing.ImageIcon is not being created.
Simply, why dont you use
setIconImage(imageIcon.getImage());
Here is the full code,
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class IconImageDemo1 extends JFrame
{
public IconImageDemo1()
{
createAndShowGUI();
}
private void createAndShowGUI()
{
setTitle("IconImage Demo");
setLayout(new FlowLayout());
setSize(400,400);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("icons/camera.png")));
setLocationRelativeTo(null);
}
public static void main(String args[])
{
SwingUtilities.invokeLater(new Runnable(){
public void run()
{
new IconImageDemo1();
}
});
}
}

Try this. Pretty the same as sajjad's answer just has a check to make sure the image url isn't null before using it.
java.net.URL imageUrl = YourClass.class.getResource("/IconImage.png");
if(imageUrl != null){
setIconImage(new ImageIcon(imageUrl));
}

Java adding ImageIcon to JLabel

I am trying to make a very basic game with Java and I am having trouble displaying an image on a JFrame. It has worked in the past for me and now is not, i can't see what I did wrong.
I have tried printing the current working directory and changing where I get my image to match that. It is likely that the problem is not getting the image, since my (filefinder or filereader or something like that) can find it without problems, but I cannot correctly add it (the ImageIcon) to the JLabel, or that to the JFrame.
This is my code...
JFrame frame = new JFrame("no image");
ImageIcon image = new ImageIcon("C:/Documents and Settings/user/Desktop/hi/xD/JavaApplication2/image.png");
JLabel imagelabel = new JLabel(image);
frame.add(imagelabel);
The JFrame has been setVisible(true) and pack().
Could someone please help me understand what is wrong.

Your problem lies here:
ImageIcon image = new ImageIcon("C:/Documents and Settings/user/Desktop/hi/xD/JavaApplication2/image.png");
JLabel imagelabel = new JLabel(character);
You create an ImageIcon "image" but you create your JLabel with "character".
It should be:
JLabel imagelabel = new JLabel(image);

Try,
ImageIcon image = new ImageIcon("c:\\path\\image.png");
imagelabel = new JLabel(character, image, JLabel.CENTER);
frame.add(imagelabel);
Take a look at Tutorial - How to use Icons

import javax.awt.*;
import java.awt.*;
import java.awt.event*;
//class name image
class image {
image()
//constructor {
Frame f=new Frame("Image");
//Frame
f.setSize(500,500);
f.setVisible(true);
Panel p =new Panel();
//Panel
f.add(p);
p.addLayout(null);
ImageIcon ii=new ImageIcon("set your image path");
//ImageIcon is used to image Display .
Label l =new Label(ii);
p.add(ii);
p.setBounds(set you bounds);
//Like that(20,20,500,40);
}
public static void main(String [] args) {
image obj = new
}
}