import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
public class StringIOApp {
public static void main(String args[]) throws IOException {
StringWriter outStream = new StringWriter();
String s = "This is a test.";
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());
StringReader inStream;
inStream = new StringReader(outStream.toString());
int ch = 0;
StringBuffer sb = new StringBuffer("");
while ((ch = inStream.read()) != -1)
sb.append((char) ch);
s = sb.toString();
System.out.println(s.length() + " characters were read");
System.out.println("They are: " + s);
}
}