Write to console using Filewriter in java

Question

I got problem in java. I need to use FileWriter to write output. But now i want to use Filewriter to write standard output( to console). Have any ideas?? Thanks for your helping

Who has given you this patently ridiculous requirement and why? — Hovercraft Full Of Eels, Mar 26 '18 at 01:37
@RobbyCornelissen stdout (also stderr and stdin) can be identified and written to like any normal file via a filedescriptor. And that's actually just what java does: https://docs.oracle.com/javase/7/docs/api/java/io/FileWriter.html#FileWriter(java.io.FileDescriptor) — , Mar 26 '18 at 02:22

score 3 · Answer 1 · answered Mar 26 '18 at 02:12

This can be done by initializing the FileWriter with a FileDescriptor via the constructor FileWriter#FileWriter(FileDescriptor)

A quick example:

import java.io.*;

public class Test
{
    public static void main(String[] args)
    throws IOException
    {
        FileWriter fw = new FileWriter(FileDescriptor.out);
        fw.write("Hello world\n");
        fw.flush();
        fw.close();
    }
}

Outputs

Hello world

Write to console using Filewriter in java

1 Answers1