How to append to a file

Question

hi here is my code. i wanted to appended the string to the file with out rewriten over it.
and how do i make it do a new line.
import java.io.* ;
import java.awt.*;
import java.util.*;
import java.text.*;
import java.lang.Byte.*;
import java.awt.Event.*;
//===================================================================
class BinRead3{
//used writer class instead uses dataoutput stream for now
BufferedWriter out;
void open(String filename)
Opens the file to be written to
@param String the filename of the file
POST: file can be written to
public void open(String filename){
try
out = new BufferedWriter(new FileWriter(filename));
catch (IOException e)
System.out.println("open file to write error");
//create the log File File
void addEntry(String entry)
Writes an entry to the file
@param String the entry to be written
POST: entry written to file
public void addEntry(String entry){
//write Error or what ever to the File
try{
out.write(entry);
catch(IOException e2){
     System.out.println("Error trying to write to the file");
void close()
Closes the file
POST: the file can not be written to
public void close(){
try {
out.close();
catch (IOException e2)
System.out.println("Error closing file");
}//End of Close
public static void main( String args[] ) {
     // Construct an instance of the Timer class
          BinRead3 bRead = new BinRead3();
bRead.open("LogFile.log");
bRead.addEntry("this is error testing");
bRead.addEntry("this is error testing3");
bRead.close();
}//End of file Import log
//===================================================================

Answer 1

FileWriter has a number of constructors. One of then is
FileWriter(String fileName, boolean append)
passing true as the second parameter will not overwrite existing content. This information is available in the j2se sdk documentation bundle downloadable from java.sun.com