How to read data from a file and display the same through applet in html page

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Below is the java source code where I am trying to read a file and want to display its content on an applet which is opened through a html page. The problem is that when I try to open the applet through appletviewer there is not problem the data is displayed successfully but the same does not happens then I open the applet through the browser.

I am not getting what is the problem in opening the same file through browser.

Please help...

Following is the code for "fileapplet.java" file:

Java

import java.applet.*;
import java.awt.*;
import java.io.*;
import java.util.Scanner;

public class fileapplet extends Applet
{
	public void paint(Graphics g)
	{
		BufferedReader diskInput;
		String word;
                int a=0,b=0;  
		try 
		{ 
			//reads in words from a file
      		diskInput = new BufferedReader(new InputStreamReader(new FileInputStream("Tree.txt")));
			// file name is on command line
      		Scanner input=new Scanner(diskInput);

	     		while (input.hasNext()) 
			{ 
        			word=input.next();
        			word=word.toLowerCase(); // use lower case only
				g.drawString(word,a,b);
                                a+=10;
                                b+=10;
      		}
    		}
   		catch (IOException e) 
		{
      	}		
	} 
}

Following is the code for "fileapplet.html":

HTML

<html>
<applet code="fileapplet.class" width="100" height="100">
</applet>
</html>

Following is the content of "Tree.txt" file:

56 78 87 54

Posted 13-Oct-12 0:49am

reenarankawat

Updated 13-Oct-12 0:56am

AmitGajjar

v2

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Ashraff Ali Wahab · Answer 1 · 2012-10-14T15:58:00

Solution 1

Your applet doesnt have permission to do read/write I/O.
You need to sing the applet or update your .java.policy file to give access permissions.

Posted 14-Oct-12 15:58pm

Ashraff Ali Wahab

Comments

reenarankawat 22-Oct-12 22:46pm

Thank you for your suggestion but I get exception "access denied (java.io.FilePermission Tree.txt write)" even after getting the applet signed. What must I do now. Please help.