applet

问题 In my web application, I am using a applet which is signed jar and this applet was working fine before jre 1.6 and 1.7. But after security popup and blocking error of applet we had to purchased a java code signing certificate. I have signed this applet jar successfully and this applet is running without any problem on HTTP protocol. If I open this applet on HTTPS, it start giving exceptions of SSLHandshakeException. I have tried every possible solution to run this but it failed. *Java Plug-in

问题 I am making this java applet graphics with nodes and edges. I want to implement the fade-in and fade out effect on retrieval of the new nodes when one node is clicked, but I don't know how to write and implement the code. To clarify, for example animal node retrieves tiger and lion nodes. so when animal is clicked the node and the edge attached to it gradually fades away and the tiger and lion nodes gradually appear. Thank you in advance 回答1: This example uses AlphaComposite to do the fading.

问题 When I try to run an applet in applet viewer it is not able to find resources (Image). I try to load resource like this: String cb= this.getCodeBase().toString(); String imgPath = cb+"com/blah/Images/a.png"; System.out.println("imgPath:"+imgPath); java.net.URL imgURL = Applet.class.getResource(path); but when i run it in appet viewer path is like this: imgPath:file:D:/Work/app/build/classes/com/blah/Images/a.png though image is there in this path, is prefix file: causing problem, how can i

问题 import java.sql.*; import java.io.*; import java.awt.*; import java.awt.event.*; import java.applet.*; /* <applet code="A0" width=250 height=200> </applet> */ public class A0 extends Applet implements ActionListener,ItemListener { String msg=""; Button view,delete,create,edit,reapp,exit; TextField M_head; int x,i,ans=0,flag; public void init() { setLayout(new FlowLayout(FlowLayout.CENTER,50,3)); view = new Button("view"); delete = new Button("delete"); create = new Button("create"); edit =

问题 why do we need init() rather than a constructor ? Please answer in reference of Servlet and Applet . How does the init() of Applet differ from Servlet ? 回答1: The init() method creates and loads the servlet. But the servlet instance is first created through the constructor (done by Servlet container). We cannot write constructors of a servlet class with arguments in servlet (It will throw Exception). So, They provided a init() method that accepts an ServletConfig object as an argument.

问题 At the moment when my applet runs in a web browser it is blocked from making any outside network connections. Is it possible to change any settings to allow it make connections? It works fine when run from the desktop, but when in a browser it restricts it. Thanks ~ Kyle G 回答1: Applets can connect back to the server they were downloaded from ("same origin policy"). From 6u10 they can also access sites with appropriate crossdomain.xml file (google it). Randomly allowing access to any site

问题 I've been trying to run a simple applet that I created from the command line. I tried just doing: C:\java Applet It obviously didn't work; however, I noticed that Eclipse lets me run the applet if I select the class and select run as java applet. How does Eclipse do this? 回答1: I believe IDEs typically launch applets using the appletviewer, but using an unrestricted security policy (the appletviewer when launched from the command line is sand-boxed). To launch the applet viewer from the

问题 This question isn't limited to people who know AppleScript, if you do Cocoa, etc., you should know the answer to this: I'm making a droplet in AppleScript that compresses JavaScript files, so obviously, I only want JavaScript files to be allowed into the scripts. Any ideas? Thanks so much. 回答1: property kJavascriptExtension : "js" property pValidFileList : {} on open of theFiles -- Executed when files are dropped on the script set fileCount to (get count of items in theFiles) repeat with

问题 Since Apple forced the update to JDK 7 on Mac, old AWT applets no longer support copy/paste. For example, if you visit: Simple AWT Textfield Example you cannot copy and paste into the applet text field on that page. I've confirmed that you can still copy/paste in AWT on Windows with JDK 7. Anybody know a workaround? 回答1: Oracle released Java 6 Update 24 in February 2011 to remedy 21 vulnerabilities: Announcement As part of this security release, the ability to copy & paste from a computer's

问题 I have a Java Applet that is generating an image. Ultimately, I would like to insert the image data into a database, so I want to temporarily store the image data in a form field on the page containing the applet. I am hoping to do this without storing an image file on the client machine. This all comes from a signature pad. Here is some code that is supposed to generate a bit maped image from vector data stored in the sigObj object: sigObj.setImagePenWidth(10); sigObj.setImageXSize(1000);