|  import java.io.CharArrayReader;
 import java.io.CharArrayWriter;
 import java.io.IOException;
 
 public class Main {
 public static void main(String args[]) throws IOException {
 CharArrayWriter outStream = new CharArrayWriter();
 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.size());
 CharArrayReader inStream;
 inStream = new CharArrayReader(outStream.toCharArray());
 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);
 }
 }
 
 
 
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