How to append a text to a file

arco

Hi there,

As seen in SaveFile2 in the example, you can save a file with PrintWriter like:

PrintWriter output = createWriter("log.txt"); output.println("This is a log"); output.flush(); output.close();

However, log.txt will be overwritten when you run this code twice. Does anyone know how to "append" text to a file?

Best..Yui

akenaton

@ arco=== that is easy::

    import java.io.FileWriter;
    import java.io.*;
    FileWriter fw;
    BufferedWriter bw;
    void keyPressed() { // Press a key to save the data

     try{
              File file =new File(chemin+"/positions.txt");
    //chemin = dataPath;
    // positions.txt== your file;

              if(!file.exists()){
                file.createNewFile();
              }

              FileWriter fw = new FileWriter(file,true);///true = append
              BufferedWriter bw = new BufferedWriter(fw);
              PrintWriter pw = new PrintWriter(bw);

              pw.write("hello world!!!!! j'ajoute something au txt");

              pw.close();


           }catch(IOException ioe){
               System.out.println("Exception ");
               ioe.printStackTrace();
          }
       }

arco

Thank you akenaton,

For readers, I should paste working example.

import java.io.FileWriter;
import java.io.*;
FileWriter fw;
BufferedWriter bw;
void keyPressed() { // Press a key to save the data
  try {
    File file =new File("/users/kitayui/desktop/test.txt");
    //chemin = dataPath;
    // positions.txt== your file;

    if (!file.exists()) {
      file.createNewFile();
    }

    FileWriter fw = new FileWriter(file, true);///true = append
    BufferedWriter bw = new BufferedWriter(fw);
    PrintWriter pw = new PrintWriter(bw);

    pw.write("hello world!!!!! j'ajoute something au txt");

    pw.close();
  }
  catch(IOException ioe) {
    System.out.println("Exception ");
    ioe.printStackTrace();
  }
}


void draw() {
}