How to append data to a file?

Question

I trying to write into the txt file.
But with out losing the data that is already stored in the file.

But my problem that when I put string in the txt file, the

Answer 1

Use a FileWriter with second argument 'true' and a BufferedWriter:

FileWriter writer = new FileWriter("outFile.txt", true);
BufferedWriter out = new BufferedWriter(writer);