Problem During reading and write local file

Question

Hi ,
I had written a small applet program, it have function �readNwriteFile()� it read/write the local file
This function works fine when I call it from start () function.
But whenever I was trying to call this function from java script it gave me this exception.
�java.security.AccessControlException: access denied (java.io.FilePermission C:\temp_jar\DSC01692.JPG read)�.
Java script is working fine, I can access any another function from script The problem is some related to access
I had set the permission in my policy file .this the permission that I had set.
grant codebase "file:c:\temp_jar"{
permission java.io.FilePermission "<< ALLFILES >> , "read ,write ,delete ,execute ";
Java code.
package com.ravindra;
import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.util.*;
public class MialTest extends JApplet{
     public void init() {
     public void start(){
          readNwriteFile(); /// When I call this function from here It is working
     public byte [] readNwriteFile(){
          try {
               File localfile = null;
               localfile = new File("C:\\temp_jar\\DSC01692.JPG");
               FileInputStream fs = new FileInputStream(localfile);
               ByteArrayOutputStream bs = new ByteArrayOutputStream() ;
               int actual_data = (int)fs.read();
               while(actual_data > -1){
                    bs.write(actual_data);
                    actual_data = (int)fs.read();
               byte [] final_data = bs.toByteArray();
               File out_file = new File("C:\\temp_jar\\Ravindra_test.JPG");
               FileOutputStream out_stream = new FileOutputStream(out_file);
               out_stream.write(final_data);
               out_stream.flush();
               fs.close();
               bs.close();
               localfile = null;fs = null; bs = null;
               return final_data;
          } catch (Exception e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
               return null;
Java Script Code:

Answer 1

Hi ,
I had written a small applet program, it have function �readNwriteFile()� it read/write the local file
This function works fine when I call it from start () function.
But whenever I was trying to call this function from java script it gave me this exception.
�java.security.AccessControlException: access denied (java.io.FilePermission C:\temp_jar\DSC01692.JPG read)�.
Java script is working fine, I can access any another function from script The problem is some related to access
I had set the permission in my policy file .this the permission that I had set.
grant codebase "file:c:\temp_jar"{
permission java.io.FilePermission "<< ALLFILES >> , "read ,write ,delete ,execute ";
Java code.
package com.ravindra;
import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.util.*;
public class MialTest extends JApplet{
     public void init() {
     public void start(){
          readNwriteFile(); /// When I call this function from here It is working
     public byte [] readNwriteFile(){
          try {
               File localfile = null;
               localfile = new File("C:\\temp_jar\\DSC01692.JPG");
               FileInputStream fs = new FileInputStream(localfile);
               ByteArrayOutputStream bs = new ByteArrayOutputStream() ;
               int actual_data = (int)fs.read();
               while(actual_data > -1){
                    bs.write(actual_data);
                    actual_data = (int)fs.read();
               byte [] final_data = bs.toByteArray();
               File out_file = new File("C:\\temp_jar\\Ravindra_test.JPG");
               FileOutputStream out_stream = new FileOutputStream(out_file);
               out_stream.write(final_data);
               out_stream.flush();
               fs.close();
               bs.close();
               localfile = null;fs = null; bs = null;
               return final_data;
          } catch (Exception e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
               return null;
Java Script Code: