vaprosche. HELP ME!

ot skoro se zanimavam s JAVA. Dosega pisah na C++. Vaprosa mi e kak sas JAVA da otvori edin obiknoven .txt fail i da pisha v nego. Problema e, che kogato otvoria fail s tazi programka:

public class FileWrite{

public String s1;
public String outString;

public FileWrite(String outString){
this.outString=outString;
}

public void writenow(String myFile){

try {
BufferedReader in1 = new BufferedReader(new StringReader(outString));
PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(myFile)));
while ((s1=in1.readLine())!=null)
out.println(s1 + "/");
out.close();
} catch(EOFException e)
{
System.err.println("MY ERROR!!!! End of file");
}
catch (IOException e1)
{
System.err.println("MY ERROR!!!! IOException");
}
}

}
parvo se iztriva vsichko ot txt faila, i sled tova se zapisva novata infornacia.
V C++ moge da se otvori fail, da se pozicionira markera v kraia my i sled tova da se pishe v nego, dez da se gubi predishnoto my sadarganie.
KAK STAVA TOVA NA JAVA????
Ste sam mnogo blagodaren ako niakoi mi pomogne!

import java.io.*;

public class test {
RandomAccessFile file = null;

public test( String fileName ) throws IOException {
file = new RandomAccessFile( fileName, "rw" );
}

public void append( String s ) throws IOException {
file.seek( file.length() );
write( s );
}

public void write( String s ) throws IOException {
file.write( s.getBytes() );
}

public void close() throws IOException {
file.close();
}


public static void main( String args[] ) throws Exception {
test t = new test( "proba.txt" );
t.append( "hello\n" );
t.append( "world.\n" );
}
}

mnogo sam ti blagodaren!!!!!!

ia kato si now w Java gledaj tuka : [линк]

pone na men mnogo mi pomogna.