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Loading URL in a frane

Posted on 1997-04-28
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Last Modified: 2010-04-16
I'm new at Java.  How do I load a URL into a frame?
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Question by:Evil
3 Comments
 
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Expert Comment

by:jpk041897
ID: 1219944
Could you be more specific?

Do you mean the contents of a file, an HTTP page or an image (gif or jpeg)

If http, do you just want straight text or do you want to simulate browser behaviour?

For instance, to read the contents of a file:

1.- Define the address (getCodeBase() uses the directory where the applet was loaded from as root)

String url = "http://" + getCodeBase().getHost() + "/file.dat";

2.- Define an Input (or output) stream and a buffer for the data . For instance:
             

DataInputStream data;
String line;
              
Instantiate a URL member and asign it to whatever type of I/O operation you need. Example:

try{
   try{
     URL theURL = new URL("http", getCodeBase().getHost(), 80, "/rooms.dat");
      data = new DataInputStream(new BufferedInputStream( theURL.openStream()));
       while ((line = data.readLine()) != null) {
           // do whatever you want with the info
           YourTexttArea.appendText(line); //(append without Text for 1.1)
   }                          }
   }catch( MalformedURLException e ) {
   // Do what you want with wrong address error here
                    }
}catch (IOException e) {
// Hande I/O error here.                    
}

Other types of files/behaviour will require additional work.
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Author Comment

by:Evil
ID: 1219945
I mean loading a HTML page.  Like if you clicked on a regular link.
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Accepted Solution

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toml032697 earned 50 total points
ID: 1219946
You can load the HTML page with showDocument() method. To load a HTML page into a specific frame you must give the name of the frame as a parameter. Here is a small example:

getAppletContext.showDocument(new   URL(getCodeBase()+"my_page.html",target);

target is a string which contains the name of the frame or window into which you want my_page.html to be loaded into.
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