saving text files - compiler is returning an error

[Aarem]

Hi. I have an applet - save.class. This code should work (i think) but the java compiler is giving me an error. What is wrong with my coding?

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

public class save extends Applet
{





        BufferedWriter out = new BufferedWriter(new FileWriter("hi.txt"));
        out.write("this should save in hi.txt");
        out.close();


}

 

[stefanwagner]

Most compilers tell you, what is wrong.
If you don't understand the message, let us read it, and we could try to explain.

Missing try/ catch- or throws-IOException-statement?

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[stefanwagner]

Or didn't you surround your code with a method?

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[timw]

If you look at the java.applet.Applet, you will see that there are methods there that you are expected to override. That's how you write an Applet.

Maybe you should be doing something like this

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

public class save extends Applet
{
  public void start(){
    try {
      BufferedWriter out = new BufferedWriter(new FileWriter("hi.txt"));
      out.write("this should save in hi.txt");
      out.close();
    } catch (Exception ex) {
      //handle the problem - log it perhaps!?
    }
  }

}

It's always a good idea to post the errors you get when asking questions on this forum. It helps us to help you faster.

Tim
---------------------------
"Your morbid fear of losing,
destroys the lives you're using." - Ozzy

 

[sedj]

Bear in mind that default applet permissions for that code (ie accessing local file system) will NOT allow the operation, and you must sign the applet to allow it.

--------------------------------------------------
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[timw]

Thanks for that reminder sedj. It *had* slipped my mind in my effort to point out the correct Java syntax to the OP .

Tim
---------------------------
"Your morbid fear of losing,
destroys the lives you're using." - Ozzy

 

[stefanwagner]

Aarem went away, without telling us his secrets.
Isn't Applet out, and JApplet in?

seeking a job as java-programmer in Berlin:

http://home.arcor.de/hirnstrom/bewerbung

 

[timw]

Yes Stefan, I think you'd use JApplet if you were after a Swing style applet. We'll never know unless Aarem returns .

Tim
---------------------------
"Your morbid fear of losing,
destroys the lives you're using." - Ozzy

 

[Aarem]

I'm actually not doing this in an applet -- I'm making an application. What are JApplets and Swing-style applets?

 

[timw]

Your original code was subclassing the Applet class which is how you write AWT Applets. Subclassing JApplet gets you a Swing Applet.

If you're writing a Swing application you probably want to subclass JFrame instead.

Tim
---------------------------
"Your morbid fear of losing,
destroys the lives you're using." - Ozzy

 

[sedj]

Eh ?

I'm actually not doing this in an applet

but the original post ...

I have an applet

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http://www.primrose.org.uk