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
Jump to PostThe 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 …
Jump to PostI 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
Jump to PostThe "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
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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