CODEWITHSUNDEEP
javaio
user3380123
user3380123

Reputation: 703

text file to console directly

Was thinking of making a program,such that whatsoever I write on a text file ,it should come on the console made this program

 import java.io.*;
class Redirector
{
    public static void main(String[] args) {
        try
        {
            if(args.length!=1)
            {
                throw(new Exception("wrong way"));
            }
            System.setIn(new FileInputStream("b.txt"));
            BufferedReader r=new BufferedReader(new InputStreamReader(System.in));
            PrintStream x=new PrintStream(new FileOutputStream(args[0]));
            System.out.println("enter text,end to terminanate");

            while(true)
            {
                String str=r.readLine();
                if(!str.equalsIgnoreCase("end"))
                System.out.println(str);
                else
                    break;

            }

            System.out.println("done");

        }
        catch(Exception e)
        {
            System.out.println(e);

        }
    }


}

but the problem is that I want the whatsoever I write dynamically on the file and press enter should come on the console,whereas in this case it should be saved

Upvotes: 0

Views: 60

Answers (1)

BadIdeaException
BadIdeaException

Reputation: 2124

What you're asking for is not possible. As long as you don't save the text file, its contents are not actually on the disk, they're only in memory.

You could theoretically try to access it in the allocated memory of whatever program you're using to edit the text file, but this is very difficult as it would require knowing the layout of its memory chunk. Moreover, it is a huge security risk, so most modern operating systems will make very sure you can't do it.

Upvotes: 4

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