I am creating a applet which is implementing file writing operations in java, but it is getting some error like access denied in writing. The reading operation is not having any error. I have checked Changing java.policy file for applet which implements adding permissions to java.policy file but sadly it doesnt worked.
code:
/* Java Program to Perform Read and Write Operations */
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class File extends Applet implements ActionListener
{
TextField file;
TextArea text;
//Initialize the applet
public void init()
{
setBackground(Color.white);
setLayout(null);
Label label = new Label("File Name :");
label.setBounds(100,0,100,40);
this.add(label);
file = new TextField();
file.setBounds(200,0,200,40);
this.add(file);
text = new TextArea("",0,0,TextArea.SCROLLBARS_NONE);
text.setBounds(50,75,400,300);
this.add(text);
Button read = new Button("Read From File");
read.setBounds(75,400,150,25);
this.add(read);
read.addActionListener(this);
Button write = new Button("Write To File");
write.setBounds(275,400,150,25);
this.add(write);
write.addActionListener(this);
}
//Function to call functions for operations selected
public void actionPerformed(ActionEvent e)
{
String button = e.getActionCommand();
if(button.equals("Read From File"))
{
read();
}
else
{
write();
}
}
//Function to Read the File
public void read()
{
try
{
FileReader obj = new FileReader(file.getText());
int i;
text.setText("");
while((i=obj.read())!= -1)
{
text.setText(text.getText()+(char)i);
}
obj.close();
}
catch(Exception E)
{
text.setText(E.getMessage());
}
}
//Function to Write to the File
public void write()
{
try
{
System.out.println(System.getProperty("user.home"));
FileWriter obj = new FileWriter(file.getText());
obj.write(text.getText());
obj.close();
text.setText("File Written Successfully");
}
catch(Exception E)
{
text.setText(E.getMessage());
}
}
}
/*
<applet code = File.class width=500 height=500>
</applet>
*/
error:
access denied ("java.util.PropertyPermission" "user.home" "read")
