Java tutorial
import java.io.*; public class Main { public static void main(String[] args) { CharSequence csq = "from java2s.com!"; Writer writer = new PrintWriter(System.out); try { writer.append("This is an example\n"); // flush the writer writer.flush(); // append a new sequence writer.append(csq, 2, 30); // flush the writer to see the result writer.flush(); } catch (IOException ex) { ex.printStackTrace(); } } }