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image as a background in GUI form Intellij [duplicate]

It is very simple program and i have tried my best but the JPanel doesn't come up with a background image. I just want a simple background image on my panel.
Here is my code:
import javax.swing.*;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
import java.io.*;
import java.awt.Graphics;
class PanelEx extends JPanel
{
BufferedImage img;
PanelEx()
{
try
{
img = ImageIO.read(new File("C:/Users/Pictures/s_4261.jpg"));
}
catch(Exception ex)
{
ex.printStackTrace();
}
}
public void printComponent(Graphics g)
{
g.drawImage(img,0,0,null);
}
}
class JPanelEx2 extends JFrame
{
PanelEx pe;
public static void main(String args[])
{
new JPanelEx2();
}
JPanelEx2()
{
pe = new PanelEx();
add(pe);
setTitle("JPanel Title");
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
setSize(320,240);
setVisible(true);
}
}
Thanks in advance

Replace
public void printComponent(Graphics g) {
with
#Override
public void paintComponent(Graphics g) {
super.paintComponent(g);

Don't use a JPanel. Just use a JLabel with an Icon then you don't need custom code.
See Background Panel for more information as well as a solution that will paint the image on a JPanel with 3 different painting options:
scaled
tiled
actual

Java resize an image

I would like to display an image in an area in my Jframe but the image takes up much space.
I would like to take it fair precise dimensions.
How can I do this in Java
This is my simple code :
I am open to any proposal if I did not use the right method or the right class to instantiate the image.
import java.awt.*;
import javax.swing.*;
public class ExempleDeplace extends JFrame{
private JLabel myLabel;
public ExempleDeplace(){
setLayout(new FlowLayout());
setTitle("Fenetre, modele Duchi");
setSize(500,700);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel j = new JLabel(new ImageIcon("src/images/bateau.png"));
add(j);
setVisible(true);
}
public static void main (String[] args) {
ExempleDeplace c = new ExempleDeplace();
}
}

You can paint the image in a JPanel as the whole panel. Then whenever the panel is resized, the image will be resized along with it. Here's a quick-n-dirty runnable demo:
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class ImgFrame extends JFrame {
private static BufferedImage IMG;
static{
try {
IMG = ImageIO.read(new File("img/Original_Doge_meme.jpg")); //Replace with your image path
} catch (IOException e) {
e.printStackTrace();
}
}
public ImgFrame(){
add(new ImgPanel(), BorderLayout.CENTER);
setSize(500,700);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
class ImgPanel extends JPanel{
#Override
public void paintComponent(Graphics g){
super.paintComponent(g);
g.drawImage(IMG, 0, 0, getWidth(), getHeight(), this);
}
}
public static void main(String[] args){
new ImgFrame();
}
}

It's probably cleaner to just resize the image. I highly recommend the image resizing utility methods provided by filthyrichclients.
I actually highly recommend the book as well, as it was one of the few books that actually demonstrated the power of Swing...
Once you have the code, you will want to call
createCompatibleImage(myImage, myWidth,myHeight);

Java - JPanel can't draw background image

I am learning how to work with Gui's in java. Currently I'm trying to make a simple program that opens a Gui and draws an image to the background. The problem is that the background is completely white instead of the image.
Code:
Main.java:
package com.flaghacker.buckygame;
public class Main
{
public static void main(String[] args)
{
GuiFrame guiFrame = new GuiFrame();
}
}
GuiFrame.java:
package com.flaghacker.buckygame;
import javax.swing.JFrame;
public class GuiFrame extends JFrame
{
private GuiPanel guiPanel;
public GuiFrame()
{
//General
super("Title");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Size
this.setSize(1100, 650);
this.setResizable(true);
//Components
guiPanel = new GuiPanel();
this.add(guiPanel);
//Final
this.setVisible(true);
}
}
GuiPane.java:
package com.flaghacker.buckygame;
import javax.swing.ImageIcon;
import javax.swing.JPanel;
import java.awt.Graphics;
import java.awt.Image;
public class GuiPanel extends JPanel
{
private Image backGround;
public GuiPanel()
{
backGround = new ImageIcon("D:\\Install\\Java Projects\\Testing\\Bucky\\Back.jpg").getImage();
}
#Override
public void paint(Graphics g)
{
super.paint(g);
g.drawImage(backGround, 0, 0, null);
}
}

I test your code and it works ... the possible problem are two
first) your image isn't in
"D:\\Install\\Java Projects\\Testing\\Bucky\\Back.jpg"
i suggested you to use
"D:/Install/Java Projects/Testing/Bucky/Back.jpg"
and verify
Case insensitive.
second) the image Back.jpg have width and height more high of 1100 650 so you display only a top left angle of image

JPanel Animated Background

This is a really general question, but how should I add an animated background for a JPanel. I want the background to be behind all the panel's components and graphics. Right now, I have two separate classes (one for the main panel and the other for the background). The background class uses repaint() to animate a grid moving across the screen. I've tried to make the main panel background transparent, but that hasn't gotten me anywhere.
Even more info:
My main panel is part of a CardLayout and it has many different classes in it. So when I'm adding my main panel to my main frame, I'm doing frame.getContentPane().add(cards, BorderLayout.CENTER)
cards is a JPanel which acts as a container for the mainpanel and all the panels inside main panel.
Can anybody help me out in getting a panel animated background?

You can use Toolkit.getImage() to load animated image and then draw the image in container's paintComponent. Make sure the ImageObserver is set (not null) in order to update animation frames properly. For details how image is loaded, observed and updated see How Images are Loaded appendix in Java AWT Reference.
Here is a simple example:
import java.awt.*;
import javax.swing.*;
import java.net.URL;
class AnimatedPanelDemo {
static class ImagePanel extends JPanel {
private Image image;
ImagePanel(Image image) {
this.image = image;
}
#Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(image,0,0,getWidth(),getHeight(),this);
}
}
private static void createAndShowUI() {
try {
JFrame frame = new JFrame("Image");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null);
Image image = Toolkit.getDefaultToolkit().getImage(new URL(
"http://duke.kenai.com/iconSized/duke.running.gif"));
ImagePanel imagePanel = new ImagePanel(image);
imagePanel.add(new JLabel("Some label"));
frame.add(imagePanel);
frame.setSize(100, 100);
frame.setVisible(true);
}
catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowUI();
}
});
}
}

Well, this is my first answer on stackoverflow.
Will try to help with my learning curve with this complex AWT and Swift API.
Below there's the contructor that extends JFrame
package xpto;
import java.awt.Dimension;
import java.awt.GraphicsConfiguration;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.awt.event.WindowStateListener;
import java.awt.image.ImageObserver;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import sun.java2d.SunGraphicsEnvironment;
import java.awt.Graphics;
import java.awt.Graphics2D;
public class FrameLuckyRaffle extends JFrame {
/**
*
*/
private JLabel backgroundLabel;
private ImageIcon imageIcon;
private Image bgImage;
/**
* Constructor of this frame.
*/
public FrameLuckyRaffle(String background, final String dbname) {
try {
setTitle("Lucky Raffle of "+ dbname);
GraphicsConfiguration config = this.getGraphicsConfiguration();
Rectangle usableBounds = SunGraphicsEnvironment.
getUsableBounds(config.getDevice());
setDefaultCloseOperation(DISPOSE_ON_CLOSE);
setBounds(100, 100, (int)(usableBounds.getWidth()*0.8),
(int)(usableBounds.getHeight()*0.8));
setMinimumSize(new Dimension(1024, 700));
setResizable(true);
setDefaultLookAndFeelDecorated(true);
backgroundLabel = new JLabel() {
public void paintComponent(Graphics g) {
// alternative --> g.drawImage(bgImage, 0, 0, null);
// I prefer to control the new ImageObserver parameter as bellow
g.drawImage(bgImage, 0, 0, new ImageObserver() {
#Override
public boolean imageUpdate(Image img, int infoflags,
int x, int y, int width, int height) {
img.getScaledInstance(getWidth(),getHeight(),
Image.SCALE_FAST);
return true;
}
});
// this is used to have easier control on
// image manipulation on my application
Graphics2D g2d = (Graphics2D)g;
super.paintComponent(g2d);
revalidate();
repaint();
}
};
backgroundLabel.setBounds(0, 0, 0, 0);
// this is necessary if you want more child
// components to be visible on the JFrame afterwards
backgroundLabel.setOpaque(false);
setContentPane(backgroundLabel);
addWindowListener(new WindowListener() {
#Override
public void windowOpened(WindowEvent e) {
// Set Frame Background
imageIcon = new ImageIcon(Toolkit.getDefaultToolkit().
createImage(FrameBusinessPure.class.getResource(background)));
bgImage = imageIcon.getImage().
getScaledInstance(getWidth(),getHeight(), Image.SCALE_FAST);
}
// Even after closing the window, JVM didn't Garbage Collected the instanced
// objects, for some reason. Forcing the objects to null helped on that.
#Override
public void windowClosed(WindowEvent e) {
backgroundLabel = null;
imageIcon = null;
bgImage = null;
System.gc();
}
});
addWindowStateListener(new WindowStateListener() {
#Override
public void windowStateChanged(WindowEvent e) {
// if you flush the object on runtime you will surpass the
// memory leak on using GIFs and most complex graphics
bgImage.flush();
bgImage = imageIcon.getImage().
getScaledInstance(getWidth(),getHeight(), Image.SCALE_FAST);
}
});
addMouseMotionListener(new MouseMotionListener() {
#Override
public void mouseDragged(MouseEvent e) {
// if you flush the object on runtime you will surpass the
// memory leak on using GIFs and most complex graphics
bgImage.flush();
bgImage = imageIcon.getImage().
getScaledInstance(getWidth(),getHeight(), Image.SCALE_FAST);
});
}catch (Exception e) {
e.printStackTrace();
}
}
}
Feel free to learn more on below link
https://www.oracle.com/java/technologies/painting.html

How to set JFrame or JPanel Background Image in Eclipse Helios

I've googled it and found the code:
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class ImageTest {
public static void main(String[] args) {
ImagePanel panel = new ImagePanel(new ImageIcon("background.png").getImage());
JFrame frame = new JFrame();
frame.getContentPane().add(panel);
frame.pack();
frame.setVisible(true);
}
}
class ImagePanel extends JPanel {
private Image img;
public ImagePanel(String img) {
this(new ImageIcon(img).getImage());
}
public ImagePanel(Image img) {
this.img = img;
Dimension size = new Dimension(img.getWidth(null), img.getHeight(null));
setPreferredSize(size);
setMinimumSize(size);
setMaximumSize(size);
setSize(size);
setLayout(null);
}
public void paintComponent(Graphics g) {
g.drawImage(img, 0, 0, null);
}
}
This worked for me when I create the ImageTest.java file, and put the background.png in the same folder.
But when I paste the same code in Eclipse IDE (in default package) along with the image, then it doesn't set the image as background. Actually it doesn't find the images and this is the reason.
I've tried keeping them both in same package pack; Even then it doesn't find the image, so no output.
I've tried to open the workspace > project folder > war > WEB-INF > classes
Then compiled the program from cmd. Still it doesn't show.
I don't know what the problem is. Anyone knowing any solution is most welcomed.
Thanks in Advance.
Setting background directly onto the frame is also welcomed...
I've done all this using code, but when this will be working then I'll be shifting to windows builder for GUI. So will the help from you will work in window builder also?

..new ImageIcon("background.png")..
This is a stupid (but common) way to load an image that provides no feed-back1.
You will most likely find that the background.png is no longer a file but now part of a Jar. In that case, the way to access it is using an URL obtained from Class.getResource().
The smart way to load images is using ImageIO, which throws helpful & informative exceptions if the image cannot be loaded.

This is not really answering your question but since an answer has been accepted I figured, what the hell, you might want to take a peek.
This class can be used it like any JPanel. It will slap an image on the background of the panel and will resize the image as the frame is resized.
public class JPanelWithBackground extends JPanel {
Image imageOrg = null;
Image image = null;
{
addComponentListener(new ComponentAdapter() {
public void componentResized(ComponentEvent e) {
int w = JPanelWithBackground.this.getWidth();
int h = JPanelWithBackground.this.getHeight();
image = w>0&&h>0?imageOrg.getScaledInstance(w,h,
java.awt.Image.SCALE_SMOOTH):imageOrg;
JPanelWithBackground.this.repaint();
}
});
}
public JPanelWithBackground(Image i) {
imageOrg=i;
image=i;
setOpaque(false);
}
public void paint(Graphics g) {
if (image!=null) g.drawImage(image, 0, 0, null);
super.paint(g);
}
}
Usage Example:
Image image = your image
JFrame f = new JFrame("");
JPanel j = new JPanelWithBackground(image);
j.setLayout(new FlowLayout());
j.add(new JButton("YoYo"));
j.add(new JButton("MaMa"));
f.add(j);
f.setVisible(true);