How to set an image as a background for Frame in Swing GUI of java

Question

I have created one GUI using Swing of Java  I have to now set one sample jpeg image as a background to the frame on which I have put my components How to do that

User · Answer

import javax swing    import java awt    import java awt event    class BackgroundImageJFrame extends JFrame     JButton b1    JLabel l1  public BackgroundImageJFrame     setTitle  Background Color for JFrame    setSize 400 400   setLocationRelativeTo null   setDefaultCloseOperation EXIT ON CLOSE   setVisible true       One way -----------------   setLayout new BorderLayout     JLabel background new JLabel new ImageIcon  C   Users  Computer  Downloads  colorful design png     add background   background setLayout new FlowLayout     l1 new JLabel  Here is a button    b1 new JButton  I am a button    background add l1   background add b1       Another way setLayout new BorderLayout     setContentPane new JLabel new ImageIcon  C   Users  Computer  Downloads    colorful design png      setLayout new FlowLayout     l1 new JLabel  Here is a button    b1 new JButton  I am a button    add l1   add b1      Just for refresh    Not optional    setSize 399 399      setSize 400 400           public static void main String args           new BackgroundImageJFrame

User · Answer

You can either make a subclass of the component  http   www jguru com faq view jsp EID 9691  Or fiddle with wrappers  http   www java-tips org java-se-tips javax swing wrap-a-swing-jcomponent-in-a-background-image html

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The Background Panel entry shows a couple of different ways depending on your requirements

User · Answer

Here is another quick approach without using additional panel   JFrame f   new JFrame  stackoverflow        private Image backgroundImage   ImageIO read new File  background jpg       public void paint  Graphics g          super paint g       g drawImage backgroundImage  0  0  null

User · Answer

This is easily done by replacing the frame s content pane with a JPanel which draws your image   try       final Image backgroundImage   javax imageio ImageIO read new File            setContentPane new JPanel new BorderLayout               Override public void paintComponent Graphics g                g drawImage backgroundImage  0  0  null                       catch  IOException e        throw new RuntimeException e       This example also sets the panel s layout to BorderLayout to match the default content pane layout    If you have any trouble seeing the image  you might need to call setOpaque false  on some other components so that you can see through to the background

User · Answer

if you are using netbeans you can add a jlabel to the frame and through properties change its icon to your image and remove the text  then move the jlabel to the bottom of the Jframe or any content pane through navigator

User · Answer

Perhaps the easiest way would be to add an image  scale it  and set it to the JFrame JPanel  in my case JPanel  but remember to  add  it to the container only after you ve added the other children components         ImageIcon background new ImageIcon  D   FeedbackSystem  src  images  background jpg        Image img background getImage        Image temp img getScaledInstance 500 600 Image SCALE SMOOTH       background new ImageIcon temp       JLabel back new JLabel background       back setLayout null       back setBounds 0 0 500 600

User · Answer

There is no concept of a  background image  in a JPanel  so one would have to write their own way to implement such a feature   One way to achieve this would be to override the paintComponent method to draw a background image on each time the JPanel is refreshed   For example  one would subclass a JPanel  and add a field to hold the background image  and override the paintComponent method   public class JPanelWithBackground extends JPanel      private Image backgroundImage        Some code to initialize the background image       Here  we use the constructor to load the image  This      can vary depending on the use case of the panel    public JPanelWithBackground String fileName  throws IOException       backgroundImage   ImageIO read new File fileName           public void paintComponent Graphics g        super paintComponent g           Draw the background image      g drawImage backgroundImage  0  0  this            Above code has not been tested    The following code could be used to add the JPanelWithBackground into a JFrame   JFrame f   new JFrame    f getContentPane   add new JPanelWithBackground  sample jpeg       In this example  the ImageIO read File  method was used to read in the external JPEG file

[java] How to set an image as a background for Frame in Swing GUI of java?

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