import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Arrays;

public class ByteArrayOutputStreamDemo
{

    /*
     * The following code creates a ByteArrayOutputStream
     * and store value in it. Then it get the byte array out
     * of ByteArrayOutputStream and print them out.
     */
    public static void main(String[] args) throws IOException
    {
        ByteArrayOutputStream bout = new ByteArrayOutputStream();
        bout.write(("Hello world").getBytes());

        System.out.println(Arrays.toString(bout.toByteArray()));

        System.out.println(bout.toString());

        System.out.println(new String(bout.toByteArray()));
    }

}