Write File

import java.io.*;

class BufferedWriterDemo
{
 public static void main(String args[])
 {
    try
    {
        DataInputStream in = new DataInputStream(System.in);
        FileWriter fw = new FileWriter("c:/Buffered.java");
        BufferedWriter bw = new BufferedWriter(fw);
   
        System.out.println("How many lines?");
        int numberOfLines = Integer.parseInt(in.readLine());
        String line = "";
   
        for(int i = 0; i < numberOfLines; i++)
        {
            line = in.readLine();
            bw.write(line + "\n"); // throws IOException
        }
   
        bw.close();
   
    }
    catch(Exception e)
    {
            System.out.println(" Exception : " + e);
    }
 }
}

Output