JavaRanch: Applets

calculator problem

Fri, 9 May 2008 02:40:58 MDT

I have created a calculator in applet using awt. I got a problem in textfield as when you type, textfield displays from left to right but calculator displays from right to left. So what should i do so that textfield should print from right.

Trap Applet Minimize or Iconize

Thu, 8 May 2008 19:12:56 MDT

I have been searching all over the place for a way to do this.. I have no options. It's not a Frame, it is just an applet with some info on it and they do not want it to be able to be minimized... I can't see any way of doing this, i know it may even go against some standars and all, but this is what they want and i am at a loss?? Can anyone shed some light, i cannot add any code to use Frames or anything, not allowed!! Craziness

Applet re-painting

Thu, 8 May 2008 15:30:56 MDT

I have a simple applet within a JSP.
The applet extends JApplet and overides its paint method to draw some simple shapes to the screen.

Problem is if I minimise the browser window and re-open it or scroll the applet off the page briefly then it never re-paints itself so you end up with a grey box.

I though paint was called by the system as required.

Am I wrong?

Thanks.

applets

Wed, 7 May 2008 02:32:51 MDT

how do you creat a applets please start from skre
tch

java.security. Error

Mon, 5 May 2008 01:46:45 MDT

Hiii Sheriff...I am getting a Exception of some kind of Access Control when run the following code ....I know it is something to read with the Policy...fundas...I tried reading and solving the problem but its not clicking.....I have a Excel Sheet by the name....Lib from which I am trying to read the values on my applet....thanks in advance

/*<applet code="Example.class" width=300 height=300>
</applet> */

import java.applet.Applet;
import java.io.*;
import java.net.*;
import java.sql.*;
import java.util.*;
import java.security.*;

public class Example extends Applet
{
public void init()
{
Connection con = nul...

Javascript & Java Applet

Fri, 2 May 2008 03:02:28 MDT

Can we include java script or style sheet in java applet?

Please get me example

Applet security issue - works in Firefox, not IE7

Tue, 29 Apr 2008 08:16:19 MDT

This is a signed applet. Some applet methods run fine. Those that need to do a System.getProperty fail.

I get:
AccessControlException: access denied (java.util.PropertyPermission propertyname, read)

I have AllPermission granted so how can it reject access? I explicitly granted PropertyPermission, read but that does not work either. I have been using this same approach for several years but I never used IE. Again: it works fine in FireFox so I feel I have java.policy setup properly. Ideas?

Start:applet not initialized Error

Tue, 29 Apr 2008 04:06:18 MDT

I experts I have problem displaying a button on a applet ....The following is the code I am getting a error i.e Start :Applet not initialized

/*<applet code="basic.Applet2.class" width=400 height=500>
</applet> */
//package basic;

import java.applet.Applet;
import java.awt.Button;
public class Applet2 extends Applet
{
Button b;
public void init()
{
b=new Button();
add(b);
}
};

And the story is same for all other applet applications...Please help

Embedded Chat Applet in HTML

Mon, 28 Apr 2008 20:46:17 MDT

Hi all,

I came across this site in search of help with a project for my java class. I have the parts but I have no idea as how to put them together. I need to embed this applet in html that also have a button on the bottom right for the user to login. The layout must have a text field, a list of users logged in on the right panel and on the bottom a textarea. I must use the dataobject give. Please help...I am trying it but not I don't know programming at all...this is way over my head. At this point I just want to get it to work so I can get some points. Thanks for your time and efforts.

import java.io.*;
import java.util.*;

public class DataObject implements Serializable{

private S...

sending data from applet to servlet

Mon, 21 Apr 2008 15:48:20 MDT

Hi,
I posted this problem earlier and got solution of that, thanks a lot, but there are some complexity in getting the desired output. Below is the description.

i am working on a web application in which a user can select an item(say a T-shirt) and can decorate on that item(simply by adding some text or image on it).For this we are using an applet and calling functions on it with javascript. When we select an item, the image of the item is loaded in the applet and all drawing is done on applet. After drawing i want to save the state of the applet as an image(probably in database).

Some how i have succeded in saving the image of front and back side of the product to the server folder by writing the generated imag...

applet and getCodeBase problem

Sun, 20 Apr 2008 14:12:12 MDT

hi

i am trying to get TIF file from server to open it in applet and make some changing and send back to server

this my part of my code makes problem.

String fileName = "uma.tif";
String path =getCodeBase()+fileName;
PlanarImage image = JAI.create("fileload",path);

at this line i got this Exception.

java.lang.IllegalArgumentException: "http://localhost/loly/uma.tif": File not found.
at javax.media.jai.JAI.createNS(JAI.java:1091)
at javax.media.jai.JAI.create(JAI.java:977)
at javax.media.jai.JAI.create(JAI.java:1412)
at tiff4.init(tiff4.java:54)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)<...

is applet engine installed in all browsers

Fri, 18 Apr 2008 15:58:22 MDT

I just wasted about half an hour at $40 an hour while my bench tech tried to tell me that applets have to have the JRE installed separately after a clean rebuild from disk wipe and system re-install. This is not how I understood it. It would seem that with megabyte installations now routine for browsers that applet java runtime would be obviously long-ago retired as an issue.

I couldn't get it across to him that I had lots of very well informed people to ask. Answers of all skill levels welcomed and requested.

I want to write him a detailed workup on the matter.

Reading a file from applet using webapplication....

Thu, 17 Apr 2008 03:17:26 MDT

i am creating a file using an applet ... that applet code is above web-inf folder .... if i create a file ... its creating on my desktop instead of current directory where applet is running .... what is that so?
and also i have two files where i am reading from applet ... but if i place those two files in my desktop , then it reads ... and if i place those files in current directory i will get FileNotFoundException.
I have created my own .java.policy file for accessing and reading the files...i have no problem in that....
The problem i am facing is , when i give absolute path , the file is being read ... but my question is why always c:\Document and Settings\madhu\Desktop ?? why it takes this as a classpath ??

Tha...

Reading a file from applet using webapplication....

Thu, 17 Apr 2008 01:01:03 MDT

Batch files or java program for uploading folder

Thu, 17 Apr 2008 00:03:03 MDT

Hi All,

I need to upload folder(contains files) from my jsp,my current jsp is able to upload one single file to database(in database the uploaded singlefile stored as one row,for next file next row will be created...so on).now i need to upload folder that contain single or more files and database shd be able to store multiple files .Any one have any idea to aproach this,I will appreciate your response.

Thanks

Batch files or java program for uploading folder

Wed, 16 Apr 2008 12:57:01 MDT

Warning

Tue, 15 Apr 2008 22:57:00 MDT

Dear Friend,

I am new in Jave. right now I am learning Applet but When I am trying to use THREAD in applet its giving the following warning.

Note : Java Uses or Overloads a Depricated API.
Note : REcompile with -XLint : Deprication for details.
Tool Completed Successfully

Friends I m highly expecting your kind support about the solutions.Thaking you all.

Firoz.

basics for applet running on different jre's ?

Tue, 15 Apr 2008 09:08:58 MDT

Hello,
I know this is a very basic problem, but i still cannot get a justified answer for this problem. Its like i have an applet which is compiled in JDk j2sdk1.4.2_16. Now when i try to run this applet on my IE under jre 1.5.* family on all the client machines it works fine. But when i switch to jre 1.6.* family, i see the applet being displayed, but i cannot perform any operations on it i no mouse clicks work and i cannot open any file menu or my jdialog boxes.
Is it because of the incompatibilities in jre 1.6, but wont it be backward compatible to that older version applets can run on this new jre. My applet seems to be a simple applet,with only one exception that it has lot of jframes and jpanel in it.
This problem is...

basics for applet running on different jre's ?

Tue, 15 Apr 2008 08:42:58 MDT

basics for applet running on different jre's ?

Tue, 15 Apr 2008 07:37:20 MDT

Applet OutOfMemoryError

Tue, 15 Apr 2008 03:21:19 MDT

Hi guys,

I got an error about OutOfMemoryError when the applet tried to read a 10m file. Does anybody know how to enlarge the max memory of applet in client side?

Thanks and regards,
Ralph

Warning

Mon, 14 Apr 2008 22:03:19 MDT

applet is not running in jsp

Mon, 14 Apr 2008 00:03:16 MDT

I want to run a applet in jsp.Currently it is giving Class not found Exception Error.please tell the possible solutions.

can we start one applet from another applet

Sun, 13 Apr 2008 12:43:15 MDT

i have created 3 applets 1st for the rules having ok and exit button.2nd for input having a textfield and ok,cancel and exit buttons.3rd is for output where there is a textarea and retry and ok button.now the problem is that i want when i click ok in rules window it should disappear and input window should come up and like wise.
note:All applets are of different sizes.

APPLET

Sat, 12 Apr 2008 00:31:10 MDT

I WANT TO RUN JAVA APPLET FROM DOS CMD PROMT....BUT ALTHOUGH I SAVE MY PRGRAM WITH .JAVA AND .HTML EXTENSION IN BIN FOLDER....BUT I COULD NOT ABLE TO SEE APPLET....THOUGH I COMPILE IT EIITH JAVAC AND THEN APPLETVIEWER.....AND ITS ALSO SHOWING NO ERROR.....AFTER WRITING APPLET VIEWER I GET ">" SAME AS WHEN WE WRITE JAVAC AND GETS NO ERROR....PLEASE HELP ME OUT??

save applet as image

Fri, 11 Apr 2008 11:15:08 MDT

how to save an applet generated graph as an image in any format? I have an applet code to generate a graph and want to automatically save that image on the disk to use it later. I want to do this for 13,000 records. Thanks

object of one applet accessed by object of another applet

Thu, 10 Apr 2008 10:11:05 MDT

hey.....

i created an object of the class , using this there are many variables in one applet.

there is another applet with an object..... so my doubt is that using the object of the second applet can i access the object of the first applet and simultaneously the variables of the first applet...?????

Add Enter Key Value in Input Box

Wed, 9 Apr 2008 21:53:03 MDT

Good day!

How can I add an "Enter Key Value" in a input field after it has been filled with data?
My data is coming from a barcode reader.

I have tried to read a barcode that will set the barcode reader with an enter and a double
enter key, but this doesn't work.

What I am trying to do is to automatically generate data with the given data that will be inputted
in the input box, without clicking any button.

Thanks.

How to Save applet page as a JPG file

Wed, 9 Apr 2008 06:07:01 MDT

Hello,

How to Save applet page as a JPG file ?

Thanking You.