Java tutorial
import java.io.BufferedWriter; import java.io.IOException; import java.io.StringWriter; public class Main { public static void main(String[] args) throws IOException { StringWriter sw = new StringWriter(); BufferedWriter bw = new BufferedWriter(sw); bw.append("java2s.com"); bw.close(); System.out.println(sw.getBuffer()); // appending after closing will throw error bw.append("2"); System.out.println(sw.getBuffer()); } }