[rize]

Hey i have this code and im not really sure what code to use to add background image to it, any help would do thanks!

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;


public class sampleProg extends JFrame {

	JButton button = new JButton ("Result");
	JButton button2 = new JButton ("Clear");
	
	
	JLabel label = new JLabel ("Full Name");
	JLabel label2 = new JLabel ("Age");
	JLabel label3 = new JLabel ("English");
	JLabel label4 = new JLabel ("Mathematics");
	JLabel label5 = new JLabel ("Science");
	JLabel label6 = new JLabel ("Social Studies");
	JLabel label7 = new JLabel ("Height in cm");
	JLabel label8 = new JLabel ("Weight in lbs");
	JLabel label9 = new JLabel ("Message");
	JLabel label10 = new JLabel ("Average");
	JLabel label11 = new JLabel ("Remarks");
	JLabel label12 = new JLabel ("Laurize Albarracin");

	
	
	JTextField text = new JTextField ("");
	JTextField text2 = new JTextField ("");
	JTextField text3 = new JTextField ("");
	JTextField text4 = new JTextField ("");
	JTextField text5 = new JTextField ("");
	JTextField text6 = new JTextField ("");
	JTextField text7 = new JTextField ("");
	JTextField text8 = new JTextField ("");
	JTextField text9 = new JTextField ("");
	JTextField text10 = new JTextField ("");
	JTextField text11 = new JTextField ("");
	
	int average;
	
	JPanel background = new JPanel();
	JFrame frame = new JFrame();
	
	public sampleProg (String str){
		super(str);
		
		background.setLayout (null);
		background.setBounds (30,50,90,20);
		
		button.setBounds(350,170,90,20);
		button2.setBounds(450,170,90,20);
		
		
		label.setBounds(30,90,90,20);
		label2.setBounds(30,130,90,20);
		label3.setBounds(30,170,90,20);
		label4.setBounds(30,210,90,20);
		label5.setBounds(30,250,90,20);
		label6.setBounds(30,290,90,20);
		label7.setBounds(350,90,90,20);
		label8.setBounds(350,130,90,20);
		label9.setBounds(350,210,90,20);
		label10.setBounds(350,250,90,20);
		label11.setBounds(350,290,90,20);
		label12.setBounds(300,35,150,20);

		
	
		
		text.setBounds(130,90,190,20);
		text2.setBounds(130,130,190,20);
		text3.setBounds(130,170,190,20);
		text4.setBounds(130,210,190,20);
		text5.setBounds(130,250,190,20);
		text6.setBounds(130,290,190,20);
		text7.setBounds(450,90,250,20);
		text8.setBounds(450,130,250,20);
		text9.setBounds(450,210,250,20);
		text10.setBounds(450,250,250,20);
		text11.setBounds(450,290,250,20);
		
		button.addActionListener (new ActionListener () {
			public void actionPerformed (ActionEvent e){
				
				text9.setText("Hi! "+text.getText()+"you are"+text2.getText()+"years of age and now you stand"+text7.getText()+"in cm while you're weight is"+text8.getText()+"in lbs. These are your remark and average");
				int English = Integer.parseInt (text3.getText());
				int Mathematics = Integer.parseInt (text4.getText());
				int Science = Integer.parseInt (text5.getText());
				int SocialStudies = Integer.parseInt(text6.getText());
				
				average = (English+Mathematics+Science+SocialStudies)/4;
				text10.setText(Integer.toString(average)); 
				
			}	
		}
		);
		
		button2.addActionListener (new ActionListener(){
			public void actionPerformed(ActionEvent e){
				text.setText("");
				text2.setText("");
				text3.setText("");
				text4.setText("");
				text5.setText("");
				text6.setText("");
				text7.setText("");
				text8.setText("");
				text9.setText("");
				text10.setText("");
				text11.setText("");
				
			}
		});
		
		background.add(button);
		background.add(button2);
		background.add(label);
		background.add(label2);
		background.add(label3);
		background.add(label4);
		background.add(label5);
		background.add(label6);
		background.add(label7);
		background.add(label8);
		background.add(label9);
		background.add(label10);
		background.add(label11);
		background.add(label12);
		
		background.add(text);		
		background.add(text2);
		background.add(text3);
		background.add(text4);
		background.add(text5);
		background.add(text6);
		background.add(text7);
		background.add(text8);
		background.add(text9);
		background.add(text10);
		background.add(text11);
		
		getContentPane().add(background);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		pack();
		 }
		 
		 public static void main (String[]args){
		 	
		 
		 
		 sampleProg frame = new sampleProg("Swing Application");
		 frame.setSize(730,350);
		 frame.show();

	}
	}

[b0ng01]

Override paintComponent in your JFrame and use graphics2d .drawImage()

http://download-llnw...Graphics2D.html

[Dogstopper]

Actually, it would probably be better if you added everything to a JPanel, not directly to the JFrame. That's only because it's easier to mess with graphics on a JPanel than it is on a JFrame.

[giuseppe105]

why use graphics 2d? graphics is just as fast is it not?

[rize]

Dogstopper, on 30 August 2010 - 07:11 PM, said:

Actually, it would probably be better if you added everything to a JPanel, not directly to the JFrame. That's only because it's easier to mess with graphics on a JPanel than it is on a JFrame.

so ill change this:

public class sampleProg extends JFrame {

to

public class sampleProg extends JPanel {

?

[Dogstopper]

Not quite...You still need a JFrame. You just need to have a JPanel in addition.

[b0ng01]

I would make my sampleProg class extend JPanel and where ever that is being called from create a JFrame to add that panel to.
There is no advantage in this instance of using graphics2d over graphics. I just have a habit of always casting my graphics to graphics2d.

[rize]

b0ng01, on 30 August 2010 - 07:55 PM, said:

I would make my sampleProg class extend JPanel and where ever that is being called from create a JFrame to add that panel to.
There is no advantage in this instance of using graphics2d over graphics. I just have a habit of always casting my graphics to graphics2d.

ok got it. but where can i add the JFrame?
can i use this code to add the background image for jpanel?:
http://robbamforth.w...ge-to-a-jpanel/

[b0ng01]

Wherever your main class is the one with the main method create your JFrame there. And yes, that is how you can go about it.

[pbl]

Asked so many times, I wrote a Snippet about it

http://www.dreaminco...snippet5599.htm

[rize]

pbl, on 31 August 2010 - 03:49 PM, said:

Asked so many times, I wrote a Snippet about it

http://www.dreaminco...snippet5599.htm

thanks but im still not sure how to integrate it with the code i posted, any help?

[Mercurial]

Your class extends a JPanel. Meaning everything you add on the screen, you add to that panel(this.add()). Now, you want a background image... Look at Pbl's snippet, he's overriding paint() method. Paint method paints your component( your JPanel in this case), it's borders and it's children(everything on your panel) - meaning when you override paint, besides doing the three things up mentioned, you're giving instructions to Paint() about what else it needs to draw(in your case it's a background image).

What you should do is override the paint method and let it do it's work(super.paint()), and just add the drawimage code (just like in pbl's snippet).

[rize]

i tried this code but the image is appearing behind, like it only blinks when i resize the window:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;


import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.FlowLayout;

	
public class sampleProg extends JFrame {
	
	public void paint (Graphics g){
		
		Image a=Toolkit.getDefaultToolkit().getImage("C:\\Documents and Settings\\user\\Desktop\\bg.jpg");
		g.drawImage(a,0,0,getSize().width,getSize().height,this);
		super.paint(g);
		
	}
	
	

	JButton button = new JButton ("Result");
	JButton button2 = new JButton ("Clear");
	
	
	JLabel label = new JLabel ("Full Name");
	JLabel label2 = new JLabel ("Age");
	JLabel label3 = new JLabel ("English");
	JLabel label4 = new JLabel ("Mathematics");
	JLabel label5 = new JLabel ("Science");
	JLabel label6 = new JLabel ("Social Studies");
	JLabel label7 = new JLabel ("Height in cm");
	JLabel label8 = new JLabel ("Weight in lbs");
	JLabel label9 = new JLabel ("Message");
	JLabel label10 = new JLabel ("Average");
	JLabel label11 = new JLabel ("Remarks");
	JLabel label12 = new JLabel ("Laurize Albarracin");

	
	
	JTextField text = new JTextField ("");
	JTextField text2 = new JTextField ("");
	JTextField text3 = new JTextField ("");
	JTextField text4 = new JTextField ("");
	JTextField text5 = new JTextField ("");
	JTextField text6 = new JTextField ("");
	JTextField text7 = new JTextField ("");
	JTextField text8 = new JTextField ("");
	JTextField text9 = new JTextField ("");
	JTextField text10 = new JTextField ("");
	JTextField text11 = new JTextField ("");
	
	int average;
	
	JPanel background = new JPanel();
	JFrame frame = new JFrame();
	
	public sampleProg (String str){
		super(str);
		
		background.setLayout (null);
		background.setBounds (30,50,90,20);
		
		button.setBounds(350,170,90,20);
		button2.setBounds(450,170,90,20);
		
		
		label.setBounds(30,90,90,20);
		label2.setBounds(30,130,90,20);
		label3.setBounds(30,170,90,20);
		label4.setBounds(30,210,90,20);
		label5.setBounds(30,250,90,20);
		label6.setBounds(30,290,90,20);
		label7.setBounds(350,90,90,20);
		label8.setBounds(350,130,90,20);
		label9.setBounds(350,210,90,20);
		label10.setBounds(350,250,90,20);
		label11.setBounds(350,290,90,20);
		label12.setBounds(300,35,150,20);

		
	
		
		text.setBounds(130,90,190,20);
		text2.setBounds(130,130,190,20);
		text3.setBounds(130,170,190,20);
		text4.setBounds(130,210,190,20);
		text5.setBounds(130,250,190,20);
		text6.setBounds(130,290,190,20);
		text7.setBounds(450,90,250,20);
		text8.setBounds(450,130,250,20);
		text9.setBounds(450,210,250,20);
		text10.setBounds(450,250,250,20);
		text11.setBounds(450,290,250,20);
		
		button.addActionListener (new ActionListener () {
			public void actionPerformed (ActionEvent e){
				
				text9.setText("Hi! "+text.getText()+"you are"+text2.getText()+"years of age and now you stand"+text7.getText()+"in cm while you're weight is"+text8.getText()+"in lbs. These are your remark and average");
				int English = Integer.parseInt (text3.getText());
				int Mathematics = Integer.parseInt (text4.getText());
				int Science = Integer.parseInt (text5.getText());
				int SocialStudies = Integer.parseInt(text6.getText());
				
				average = (English+Mathematics+Science+SocialStudies)/4;
				text10.setText(Integer.toString(average)); 
				
			}	
		}
		);
		
		button2.addActionListener (new ActionListener(){
			public void actionPerformed(ActionEvent e){
				text.setText("");
				text2.setText("");
				text3.setText("");
				text4.setText("");
				text5.setText("");
				text6.setText("");
				text7.setText("");
				text8.setText("");
				text9.setText("");
				text10.setText("");
				text11.setText("");
				
			}
		});
		
		background.add(button);
		background.add(button2);
		background.add(label);
		background.add(label2);
		background.add(label3);
		background.add(label4);
		background.add(label5);
		background.add(label6);
		background.add(label7);
		background.add(label8);
		background.add(label9);
		background.add(label10);
		background.add(label11);
		background.add(label12);
		
		background.add(text);		
		background.add(text2);
		background.add(text3);
		background.add(text4);
		background.add(text5);
		background.add(text6);
		background.add(text7);
		background.add(text8);
		background.add(text9);
		background.add(text10);
		background.add(text11);
		
		getContentPane().add(background);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		pack();
		 }
		 
		public sampleProg(){
		
		setLayout(new FlowLayout());
	}
	
		 public static void main (String[]args){	
			
		 sampleProg frame = new sampleProg("Swing Application");
		 frame.setSize(730,350);
		 frame.show();

	}
	

	}

[pbl]

A paint() method should be executed, ideally, in less than 1/60 of a second
really not a good place to do Disk I/O (reading from disk your bg.jpg file)
Read it in your constructor only once and then use your already read Image in memory in your paint() method

[rize]

i tried this code but the background image doesn't show

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
	
public class sampleProg extends JFrame {
	
private Image img;
	
	public void sampleProg(){
	
		
	ImageIcon icon = new ImageIcon("bg.jpg");
                
           img=icon.getImage();
	}
		
	public void paint (Graphics g){
		
		g.drawImage(img,0,0,getSize().width,getSize().height,this);
		super.paint(g);
			
	}
	
	

	JButton button = new JButton ("Result");
	JButton button2 = new JButton ("Clear");
	
	
	JLabel label = new JLabel ("Full Name");
	JLabel label2 = new JLabel ("Age");
	JLabel label3 = new JLabel ("English");
	JLabel label4 = new JLabel ("Mathematics");
	JLabel label5 = new JLabel ("Science");
	JLabel label6 = new JLabel ("Social Studies");
	JLabel label7 = new JLabel ("Height in cm");
	JLabel label8 = new JLabel ("Weight in lbs");
	JLabel label9 = new JLabel ("Message");
	JLabel label10 = new JLabel ("Average");
	JLabel label11 = new JLabel ("Remarks");
	JLabel label12 = new JLabel ("Laurize Albarracin");

	
	
	JTextField text = new JTextField ("");
	JTextField text2 = new JTextField ("");
	JTextField text3 = new JTextField ("");
	JTextField text4 = new JTextField ("");
	JTextField text5 = new JTextField ("");
	JTextField text6 = new JTextField ("");
	JTextField text7 = new JTextField ("");
	JTextField text8 = new JTextField ("");
	JTextField text9 = new JTextField ("");
	JTextField text10 = new JTextField ("");
	JTextField text11 = new JTextField ("");
	
	int average;
	
	JPanel background = new JPanel();
	JFrame frame = new JFrame();
	
	public sampleProg (String str){
		super(str);
		
		background.setLayout (null);
		background.setBounds (30,50,90,20);
		
		button.setBounds(350,170,90,20);
		button2.setBounds(450,170,90,20);
		
		
		label.setBounds(30,90,90,20);
		label2.setBounds(30,130,90,20);
		label3.setBounds(30,170,90,20);
		label4.setBounds(30,210,90,20);
		label5.setBounds(30,250,90,20);
		label6.setBounds(30,290,90,20);
		label7.setBounds(350,90,90,20);
		label8.setBounds(350,130,90,20);
		label9.setBounds(350,210,90,20);
		label10.setBounds(350,250,90,20);
		label11.setBounds(350,290,90,20);
		label12.setBounds(300,35,150,20);

		
	
		
		text.setBounds(130,90,190,20);
		text2.setBounds(130,130,190,20);
		text3.setBounds(130,170,190,20);
		text4.setBounds(130,210,190,20);
		text5.setBounds(130,250,190,20);
		text6.setBounds(130,290,190,20);
		text7.setBounds(450,90,250,20);
		text8.setBounds(450,130,250,20);
		text9.setBounds(450,210,250,20);
		text10.setBounds(450,250,250,20);
		text11.setBounds(450,290,250,20);
		
		button.addActionListener (new ActionListener () {
			public void actionPerformed (ActionEvent e){
				
				text9.setText("Hi! "+text.getText()+"you are"+text2.getText()+"years of age and now you stand"+text7.getText()+"in cm while you're weight is"+text8.getText()+"in lbs. These are your remark and average");
				int English = Integer.parseInt (text3.getText());
				int Mathematics = Integer.parseInt (text4.getText());
				int Science = Integer.parseInt (text5.getText());
				int SocialStudies = Integer.parseInt(text6.getText());
				
				average = (English+Mathematics+Science+SocialStudies)/4;
				text10.setText(Integer.toString(average)); 
				
			}	
		}
		);
		
		button2.addActionListener (new ActionListener(){
			public void actionPerformed(ActionEvent e){
				text.setText("");
				text2.setText("");
				text3.setText("");
				text4.setText("");
				text5.setText("");
				text6.setText("");
				text7.setText("");
				text8.setText("");
				text9.setText("");
				text10.setText("");
				text11.setText("");
				
			}
		});
		
		background.add(button);
		background.add(button2);
		background.add(label);
		background.add(label2);
		background.add(label3);
		background.add(label4);
		background.add(label5);
		background.add(label6);
		background.add(label7);
		background.add(label8);
		background.add(label9);
		background.add(label10);
		background.add(label11);
		background.add(label12);
		
		background.add(text);		
		background.add(text2);
		background.add(text3);
		background.add(text4);
		background.add(text5);
		background.add(text6);
		background.add(text7);
		background.add(text8);
		background.add(text9);
		background.add(text10);
		background.add(text11);
		
		getContentPane().add(background);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		pack();
		 }
		 
		public sampleProg(){
		
		setLayout(new FlowLayout());
	}
	
		 public static void main (String[]args){	
			
		 sampleProg frame = new sampleProg("Swing Application");
		 frame.setSize(730,350);
		 frame.show();

	}
	

	}

This post has been edited by rize: 02 September 2010 - 03:37 AM