Question

CODE

import java.io.*;
class tester {
 public static void main(String args[]) {
  try {
   FileReader reader = new FileReader(new File("d:\\UnderTest\\check123.txt"));
   FileWriter writer = new FileWriter(new File("d:\\UnderTest\\check123.txt"));
   BufferedReader br = new BufferedReader(reader);
   String s;
     while( (s=br.readLine()) != null ) {
       System.out.println(s);
     }
   writer.write("Shadow Shadow");
  } catch(Exception exc) {
     System.out.println(exc);
    }
  }
}

This code writes nothing and reads nothing when i run it. Where is the bug in this program ?

Answer 1

Are you sure that when you read for first time then content is there in the text file ?
You need to close Reader and Writer in finally block (missing currently in your code) of your try-catch block. closing the stream flushes out content automatically.