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 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 
 public class Main {
 public static void main(String args[]) throws IOException {
 ByteArrayOutputStream outStream = new ByteArrayOutputStream();
 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());
 ByteArrayInputStream inStream = new ByteArrayInputStream(outStream.toByteArray());
 int inBytes = inStream.available();
 System.out.println("inStream has " + inBytes + " available bytes");
 byte inBuf[] = new byte[inBytes];
 int bytesRead = inStream.read(inBuf, 0, inBytes);
 System.out.println(bytesRead + " bytes were read");
 System.out.println("They are: " + new String(inBuf));
 }
 }
 
 
 
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