Adding a pipe character '|' at the end of each line

Question

How can I add a '|' at the end of each line in a text file?
Please provide an example.
TIA

Answer 1

Using Readers and Writers are often a better choice for text: they are designed for character-based I/O, handling different character set encodings and thus more easily localizable.
BufferedReader and PrintWriter are buffered which in many cases will increase performance.
These classes also provide line-oriented methods, readLine() and println(), which will handle end-of-line delimiters in a platform-independant way.
BufferedReader in = null ;
PrintWriter out = null ;
try {
    in = new BufferedReader(new FileReader("infile.txt")) ;
    out = new PrintWriter(new FileWriter("outfile.txt")) ;
    String line ;
    while ((line = in.readLine()) != null) {
        out.print(line) ;
        out.println('|') ;
    out.flush() ;
} catch (FileNotFoundException e) {
    System.err.println("problem opening file for read: "+e) ;
} catch (IOException e) {
    System.err.println("problem reading file: "+e) ;
} finally {
    try {
        if (out != null) out.close() ;
        if (in  != null) in.close() ;
    } catch (IOException e) {
        System.err.println("problem closing files: "+e) ;
}