How to tile an image?
Hi,guys,
How to tile an image on JLabel?
thanx
Best Regards
Dragon
Not sure, but you can tile it on a JPanel. Check out reply 3 of this [url http://forum.java.sun.com/thread.jsp?forum=57&thread=316074]thread.
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public class Example {
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How can I draw image in a vbean?
this is my code :
import java.awt.BorderLayout;
import java.awt.Image;
import java.awt.Graphics;
import java.net.MalformedURLException;
import java.net.URL;
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import oracle.forms.handler.IHandler;
import oracle.forms.properties.ID;
import oracle.forms.ui.VBean;
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URL url;
Image img;
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g.drawImage(img, 0, 0, null);
} else
System.out.println("no~~~");
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if (infoflags == ALLBITS) {
System.out.println("yes");
ImageLoaded = true;
repaint();
return false;
} else
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super.init(arg0);
try {
url = new URL("file:print/77G.gif");
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Image offScreenImage = createImage(size().width, size().height);
Graphics offScreenGC = offScreenImage.getGraphics();
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// TODO Auto-generated catch block
e.printStackTrace();
but when I run it in forms
when it run Graphics offScreenGC = offScreenImage.getGraphics();
It throw a exception:
java.lang.NullPointerException at com.avicit.aepcs.calendar.PrintEmailLogo.init(PrintEmailLogo.java:72) at oracle.forms.handler.UICommon.instantiate(Unknown Source) at oracle.forms.handler.UICommon.onCreate(Unknown Source) at oracle.forms.handler.JavaContainer.onCreate(Unknown Source) at oracle.forms.engine.Runform.onCreateHandler(Unknown Source) at oracle.forms.engine.Runform.processMessage(Unknown Source) at oracle.forms.engine.Runform.processSet(Unknown Source) at oracle.forms.engine.Runform.onMessageReal(Unknown Source) at oracle.forms.engine.Runform.onMessage(Unknown Source) at oracle.forms.engine.Runform.processEventEnd(Unknown Source) at oracle.ewt.lwAWT.LWComponent.redispatchEvent(Unknown Source) at oracle.ewt.lwAWT.LWComponent.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)
I change it to:
import java.awt.BorderLayout;
import java.awt.Image;
import java.awt.Graphics;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.JFrame;
import com.sun.jimi.core.Jimi;
import oracle.forms.handler.IHandler;
import oracle.forms.properties.ID;
import oracle.forms.ui.VBean;
public class PrintEmailLogo extends VBean {
URL url;
Image img;
public void paint(Graphics g) {
try {
url = new URL("file:print/77G.gif");
img = Jimi.getImage(url);
g.drawImage(img, 0, 0, this));
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
public void init(IHandler arg0) {
super.init(arg0);
But it display nothing.
It isn't paint continuous.
what's wrong in my vbean?
please help me.The following code works fine for me:
package oracle.forms.fd;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import oracle.forms.handler.IHandler;
import oracle.forms.properties.ID;
import oracle.forms.ui.CustomEvent;
import oracle.forms.ui.VBean;
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private URL url;
private URL m_codeBase;
private Image img;
public void paint(Graphics g) {
// draw the image
g.drawImage(img, 0, 0, this);
public void init(IHandler arg0) {
super.init(arg0);
// load image file
img = loadImage("file:///c:/coyote.jpg");
public test()
super();
* Load an image from JAR file, Client machine or Internet URL *
private Image loadImage(String imageName)
URL imageURL = null;
boolean loadSuccess = false;
Image img = null ;
//JAR
imageURL = getClass().getResource(imageName);
if (imageURL != null)
try
img = Toolkit.getDefaultToolkit().getImage(imageURL);
loadSuccess = true;
return img ;
catch (Exception ilex)
System.out.println("Error loading image from JAR: " + ilex.toString());
else
System.out.println("Unable to find " + imageName + " in JAR");
//DOCBASE
if (loadSuccess == false)
System.out.println("Searching docbase for " + imageName);
try
if (imageName.toLowerCase().startsWith("http://")||imageName.toLowerCase().startsWith("https://"))
imageURL = new URL(imageName);
else if(imageName.toLowerCase().startsWith("file:"))
imageURL = new URL(imageName);
else
imageURL = new URL(m_codeBase.getProtocol() + "://" + m_codeBase.getHost() + ":" + m_codeBase.getPort() + imageName);
System.out.println("Constructed URL: " + imageURL.toString());
try
img = createImage((java.awt.image.ImageProducer) imageURL.getContent());
loadSuccess = true;
System.out.println("Image found: " + imageURL.toString());
return img ;
catch (Exception ilex)
System.out.println("Error reading image - " + ilex.toString());
catch (java.net.MalformedURLException urlex)
System.out.println("Error creating URL - " + urlex.toString());
//CODEBASE
if (loadSuccess == false)
System.out.println("Searching codebase for " + imageName);
try
imageURL = new URL(m_codeBase, imageName);
System.out.println("Constructed URL: " + imageURL.toString());
try
img = createImage((java.awt.image.ImageProducer) imageURL.getContent());
loadSuccess = true;
System.out.println("Image found: " + imageURL.toString());
return img ;
catch (Exception ilex)
System.out.println("Error reading image - " + ilex.toString());
catch (java.net.MalformedURLException urlex)
System.out.println("Error creating URL - " + urlex.toString());
if (loadSuccess == false)
System.out.println("Error image " + imageName + " could not be located");
return img ;
}Francois -
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