Java tutorial
import java.io.IOException; import java.io.StringWriter; public class Main { public static void main(String args[]) throws IOException { StringWriter outStream = new StringWriter(100); String s = "This is a test from j a va2s.com."; for (int i = 0; i < s.length(); ++i) { outStream.write(s.charAt(i)); } System.out.println("outstream: " + outStream); System.out.println("size: " + outStream.toString().length()); } }