import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintStream;
public class Main {
public static void main(String[] argv) {
append(new File("c:\\a.txt"), "value");
}
public static void append(File aFile, String content) {
try {
PrintStream p = new PrintStream(new BufferedOutputStream(new FileOutputStream(aFile, true)));
p.println(content);
p.close();
} catch (Exception e) {
e.printStackTrace();
System.err.println(aFile);
}
}
}