Read and Write to text file in java

java

Solution

Append new line to the FileWriter on each iteration, but do it right, don't concatenate strings.

FileWriter fw=new FileWriter(file,true);            
for(int i=25;i<30;i++){    
    fw.append(String.valueOf(i)); 
    fw.append("\n"); 
}

Problem

I'm trying to add values in a textfile. Its working well and output is good in eclipse. But when i see the values in file, i get a straight pattern : 2526272829. ``` import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.InputStreamReader; public class FileDemo { public static void main(String[] args) throws IOException { BufferedReader bfr; String line; bfr=new BufferedReader(new InputStreamReader(System.in)); String fileName=bfr.readLine(); File file=new File(fileName); if(!file.exists()){ file.createNewFile(); } try{ bfr=new BufferedReader(new FileReader(file)); while((line=bfr.readLine())!=null){ System.out.println(line); } FileWriter fw=new FileWriter(file,true); for(int i=25;i<30;i++){ fw.append(String.valueOf(i)); } while((line=bfr.readLine())!=null){ System.out.println(line); } bfr.close(); fw.close(); }catch(FileNotFoundException fex){ fex.printStackTrace(); } } } ``` and i also want to know how bufferedReader storage works so please give some links.

Original source