how to open a file?

[sweetheart89115]

I have a server which is always sending data, and I want to keep sending this data to a file. I tried using the following:



try{
file= FileOutputStream("modem.txt");
new PrintStream(file).println(new String(in));
file.close();
}
catch (IOException e){System.err.println("error");
System.exit(-1);}

But my data is always been overwritten, I want to keep the old and new data.

Is there any way to keep sending data into a file without overriding the old data?