hi, does anyone know how to insert a background picture to a JPanel?
I have googled around, found something seem more difficult than it should be, and a simple one as below but not showing the pic.
midBoard = new JPanel();
JLabel pic = new JLabel(new ImageIcon("Sunset.jpg"));
//midBoard.setBackground(java.awt.Color.RED);
midBoard.add(pic);any suggestion? thanks
The easiest way to do this is to extend JPanel and override the paintComponent method. When you override the paintComponent method, you should do the following:
public void paintComponent( Graphics g )
{
super.paintComponent( g );
Graphics2D g2d = (Graphics2D) g;
// use g2d.drawImage methods to paint your background image here...
}thanks, however, the drawImage() method has many parameters. would you mind to show how i import just one image to the drawImage()?
i got it so far :
import java.text.MessageFormat;
import java.sql.*;
import javax.swing.*;
import javax.swing.ImageIcon;
import java.awt.*;
import java.awt.event.*;
import java.awt.print.*;
public class TheFrame extends JFrame
{
private JMenuBar mb;
private JPanel midBoard;
private JPanel textPan;
private BorderLayout bl = new BorderLayout();
public TheFrame()
{
super("****** Employee Record Program @@ Written by Henry Li ******");
this.setLayout(bl);
mb = new MenuBar(this);
/////////////// middle board //////////////////////
//midBoard = new JPanel();
midBoard = new MidPic(); // ???????????
//JLabel pic = new JLabel(new ImageIcon("Sunset.jpg"));
//midBoard.setBackground(java.awt.Color.RED);
//midBoard.add(pic);
////////// end middle board //////////////////
//////////// the credit message ////////////////
JLabel one = new JLabel("Java Final Project: Employee Record");
one.setAlignmentX(0.5f);
JLabel two = new JLabel("Written by Henry Li");
two.setAlignmentX(0.5f);
textPan = new JPanel();
textPan.setBackground(java.awt.Color.gray);
LayoutManager boxLayout = new BoxLayout(textPan, BoxLayout.Y_AXIS);
textPan.setLayout(boxLayout);
textPan.setSize(100,300);
textPan.add(one);
textPan.add(two);
//////////// end the center message ////////////////
///////////// The Frame setup /////////////////
setJMenuBar(mb); // NORTH of Frame
add(midBoard, BorderLayout.CENTER); // CENTER of Frame
add(textPan, BorderLayout.SOUTH); // SOUTH of Frame
validate();
setBounds(400, 400, 600, 300);
setVisible(true);
////////////// end frame setup ////////////////
}
public static void main(String arg[]) throws SQLException
{
new TheFrame();
}
}// end the Class TheFrame
class MidPic extends JPanel
{
public void paintComponent (Graphics g)
{
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
g2d.drawImage("Sunset.jpg");
}
}thanks
found a similar example and implemented,, pic now showing still.
anything missing ?
import java.text.MessageFormat;
import java.sql.*;
import javax.swing.*;
import javax.swing.ImageIcon;
import java.awt.*;
import java.awt.event.*;
import java.awt.print.*;
public class TheFrame extends JFrame
{
private JMenuBar mb;
private JPanel midBoard;
private JPanel textPan;
private BorderLayout bl = new BorderLayout();
private ImageIcon icon;
private Image image;
public TheFrame()
{
super("****** Employee Record Program @@ Written by Henry Li ******");
this.setLayout(bl);
mb = new MenuBar(this);
mb.setBackground(java.awt.Color.white);
/////////////// middle board //////////////////////
icon = new ImageIcon("Sunset.jpg");
JPanel panel = new JPanel()
{
protected void paintComponent(Graphics g)
{
g.drawImage(icon.getImage(), 0,0, null);
super.paintComponent(g);
}
};
panel.setOpaque(false);
panel.setPreferredSize(new Dimension(100, 100));
//////////// end mid board //////////////
//////////// the credit message ////////////////
JLabel one = new JLabel("Java Final Project: Employee Record");
one.setAlignmentX(0.5f);
JLabel two = new JLabel("Written by Henry Li");
two.setAlignmentX(0.5f);
textPan = new JPanel();
textPan.setBackground(java.awt.Color.white);
LayoutManager boxLayout = new BoxLayout(textPan, BoxLayout.Y_AXIS);
textPan.setLayout(boxLayout);
textPan.setSize(100,300);
textPan.add(one);
textPan.add(two);
//////////// end the center message ////////////////
///////////// The Frame setup /////////////////
setJMenuBar(mb); // NORTH of Frame
//add(midBoard, BorderLayout.CENTER); // CENTER of Frame
add(panel, BorderLayout.CENTER);
add(textPan, BorderLayout.SOUTH); // SOUTH of Frame
validate();
setBounds(400, 400, 600, 300);
setVisible(true);
////////////// end frame setup ////////////////
}
public static void main(String arg[]) throws SQLException
{
new TheFrame();
}
}// end the Class TheFrame
I think you're probably having a resource location issue. Take a look through this info on loading images with getResource():http://java.sun.com/docs/books/tutorial/uiswing/components/icon.html#getresource
I think you're probably having a resource location issue. Take a look through this info on loading images with getResource():http://java.sun.com/docs/books/tutorial/uiswing/components/icon.html#getresource
haha, ezzaral... you are just too good every time.. hit right at the point. right, i just figured it out i should have placed my image somewhere other than where i placed it. thanks for reply very much though.
if you don't mind, i do have one other thing would ask for a quick opinion. basically i have buttons and actionListeners... .now i wanna add my KeyListener as well... how do i place the event codes in both the ActionListener and KeyListener without repeating the long code twice?
//import java.text.MessageFormat;
//import java.util.*;
import javax.swing.*;
//import java.awt.*;
import java.awt.event.*;
public class AddRecord implements ActionListener
{
private JFrame frame;
private RecordCP cp;
private JButton addButton, dummyButton;
private DataHolder dh = new DataHolder();
private boolean status=true;
int id, age;
String fn, ln, ph, add, city, st, zip, sex;
double hourly, hours;
public AddRecord(JFrame f)
{
frame = f;
cp = new RecordCP(f); //this is a JPanel with the form
addButton= new JButton("Add Record");
addButton.addActionListener(this);
addButton.addKeyListener(new KeyAdapter()
{
public void keyPressed(KeyEvent e)
{
if(e.getKeyCode()== KeyEvent.VK_ENTER)
{
JOptionPane.showMessageDialog(null, "Can't figure this out unless duplicating the same code of ActionEvent.");
}
}
});
dummyButton = new JButton("");
cp.add(addButton);
cp.add(dummyButton);
}
public void actionPerformed(ActionEvent e)
{
wrapper(e);
} // end function actionPerformed
private void wrapper(ActionEvent e)
{
frame.getContentPane().removeAll();
cp.setBounds(400, 400, 400, 200);
cp.setVisible(true);
frame.add(cp);
frame.validate();
frame.setVisible(true);
frame.repaint();
if((e.getSource() == addButton))
{
try
{
if(cp.getFields().get(0).equals(""))
{
JOptionPane.showMessageDialog(null, "Employee ID must be entered!");
status=false;
}
else
{
id = new Integer(cp.getFields().get(0));
boolean existID = dh.idCheck(id);
if(existID ==true)
{
JOptionPane.showMessageDialog(null, "The ID is already exist.");
status=false;
}
else
{
fn = cp.getFields().get(1);
ln = cp.getFields().get(2);
ph = cp.getFields().get(3);
add = cp.getFields().get(4);
city= cp.getFields().get(5);
st = cp.getFields().get(6);
zip = cp.getFields().get(7);
sex = cp.getFields().get(9);
if(cp.getFields().get(8).equals(""))
{
age=0;
}
else
{
age = new Integer(cp.getFields().get(8));
}
if(cp.getFields().get(10).equals(""))
{
hourly= 0;
}
else
{
hourly = new Double(cp.getFields().get(10));
}
if(cp.getFields().get(11).equals(""))
{
hours=0;
}
else
{
hours = new Double(cp.getFields().get(11));
}
status = true;
}// end ID check else
if(status == true)
{
dh.addRecord(id, fn, ln, ph, add, city, st, zip, age, sex, hourly, hours);
cp.clearFields();
JOptionPane.showMessageDialog(null, "The new record has been saved!");
dh.shutDown();
}
}// if id field has something --> the else
}//end try
catch(NumberFormatException nfe)
{
JOptionPane.showMessageDialog(null, "Please enter number only for Employee ID, age, hourly rate, and hours. Thank you");
}
}//end addButton
} // end wrapper
} // end class AddRecordi got everything into a method ... and i tried something like this
method(ActionEvent a, KeyEvent k)
{
if (e.getSource() == button || k.getSource() == button)
}not working.. huh, please shed some light on this one.
The "official" way to perform the same action from different UI events is to use Java Actions. See
http://java.sun.com/docs/books/tutorial/uiswing/misc/action.html
... but if all you want to do is have a default button clicked when you press "enter", see getRootPane and setDefaultButton in the Swing API
And the unofficial way would be to put the code in a method, then call the method in the appropriate places.
for add image in JPanel, you must create java class extends JPanel and you can make over in method paintComponent.
example : [http://www.community-java.com/2017/03/cara-menambahkan-background-image-pada-jpanel-di-java-swing.html]
Anyone still reading this after 7 years...
Don't use the code referred to in the previous post - it reloads the image resource every time the panel is repainted. That's really stupid.
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