How to write in a file without erase it each time I want to write inside

Question

Hi
My problem is to write in a unique file without erasing what I have written inside before.
Because I use an Applet and I write some information in afile each time the user push a button but I want to keep all the information, beacause in my case I only have the last information i.e. the last time the user push the button.
My code is:
Below it is the code where I write in the file:
writer2 = new BufferWriter("chemin.txt");
methode = uneMethode;
eps = unEps;
n = unN;
solExacte=uneSolExacte;
y=z;
Date time =new Date();
Vector valeur = new Vector();
valeur.add(new Double(eps));
valeur.add(new Integer(n));
valeur.add(new Integer(solExacte));
valeur.add(new Integer(methode));
String time_string = time.toString();
valeur.add(new String(time_string));
//writing to variables file
BufferWriter writer = new BufferWriter("variables");
writer.write(valeur);
Now it is the class Bufferwriter:
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Vector;
import java.io.File;
public class BufferWriter {
private String fileName;
BufferedWriter w;
public BufferWriter(String name) throws IOException {
fileName=name;
w=new BufferedWriter(new FileWriter(new File(fileName)));
public void write(Vector v) throws IOException {
String string;
for (int i=0; i<5; i++) {
string=((v.get(i)).toString());
w.write(string,0, string.length());
w.newLine();
w.flush();
public void close() throws IOException{
close();}

Answer 1

try
w=new BufferedWriter(new FileWriter(fileName, true));
The Constructor you want is ..
FileWriter
public FileWriter(String fileName,
boolean append)
throws IOException