TestDataStream

import java.io.*;
public class TestDataStream {
  public static void main(String[] args) {
    ByteArrayOutputStream baos =
                        new ByteArrayOutputStream();
    DataOutputStream dos =
                        new DataOutputStream(baos);
    try {
      dos.writeDouble(Math.random());
      dos.writeBoolean(true);
      ByteArrayInputStream bais =
          new ByteArrayInputStream(baos.toByteArray());
      System.out.println(bais.available());
      DataInputStream dis = new DataInputStream(bais);
      System.out.println(dis.readDouble());
      System.out.println(dis.readBoolean());
      dos.close();  dis.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}