How to work on image ??
hi All,
I am very new in swing application. I want to develope a swing application like a "photo id software".
For that, I need to perform the following task:
1. Display the Image on Frame using JFileChooser.
2. Drag and drop the label on image.
3. Display the photo on image.
I did the some hands on swing. But I was not comfortable in image part like how to display the label on specific position of image?
Kindly let me know how I start to write the program.
Any pointer regarding above problem would be appreciated.
Thanks and Regards,
Amit
ya I am talking about JLable..what I want , when i drag the JLabel on image its appear onto the image along with JLabel, like in "*photo id*" you see the background image and some text on this image like name,age,address...etc.
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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;
import com.sun.jimi.core.Jimi;
import oracle.forms.handler.IHandler;
import oracle.forms.properties.ID;
import oracle.forms.ui.VBean;
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URL url;
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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;
public class test extends VBean {
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());
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if (loadSuccess == false)
System.out.println("Searching docbase for " + imageName);
try
if (imageName.toLowerCase().startsWith("http://")||imageName.toLowerCase().startsWith("https://"))
imageURL = new URL(imageName);
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imageURL = new URL(imageName);
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img = createImage((java.awt.image.ImageProducer) imageURL.getContent());
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System.out.println("Error reading image - " + ilex.toString());
catch (java.net.MalformedURLException urlex)
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if (loadSuccess == false)
System.out.println("Searching codebase for " + imageName);
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loadSuccess = true;
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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 ;
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hi,
I want to upload an image file with my jsp page, but i cannot do it,
I have used Jakarta common file upload for this & i have also read following file. But my code isnot working properly? Can you give me any example how to upload an image & how to display it?
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http://jakarta.apache.org/commons/fileupload/using.htmlwith regards
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But after writing the following code i have got following error? What's the problem of this code? please help me?
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<%@ page import="org.apache.commons.fileupload.*" %>
<%@ page import ="java.util.*" %>
<%@ page import ="java.io.*" %>
</head>
<body>
<%
boolean isMultipart = FileUpload.isMultipartContent(request);
DiskFileUpload upload = new DiskFileUpload();
List items = upload.parseRequest(request);
Iterator iter = items.iterator();
while (iter.hasNext()) {
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String value = item.getString();
//ring name= request.getParameter("")
%>
<%= name %>:<%= value %>
<%
} else {
%>
<%
InputStream stream = item.getInputStream();
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new FileOutputStream(getServletContext().getRealPath("/images"+"/"+ item.getName()));
int bytesRead = 0;
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%>
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org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
FileUpload cannot be resolved
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
DiskFileUpload cannot be resolved to a type
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
DiskFileUpload cannot be resolved to a type
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
FileItem cannot be resolved to a type
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
FileItem cannot be resolved to a type
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
FileUpload cannot be resolved
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
DiskFileUpload cannot be resolved to a type
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
DiskFileUpload cannot be resolved to a type
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
FileItem cannot be resolved to a type
An error occurred at line: 13 in the jsp file: /uploadfileC.jsp
Generated servlet error:
FileItem cannot be resolved to a type
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:414)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:297)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:303)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
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