Java 数据流

import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;/* * DataOutputStream,DataInputStream数据流 * 通过ByteArrayOutputStream以及ByteArrayInputStream输入输出double型 */public class Test17 {    public static void main(String[] args) throws IOException    {        ByteArrayOutputStream baos = new ByteArrayOutputStream();        DataOutputStream dos = new DataOutputStream(baos);        double a = 110000000000.222;        dos.writeDouble(a);        byte[] c= baos.toByteArray();        ByteArrayInputStream  bais = new ByteArrayInputStream(c);        DataInputStream dis = new DataInputStream(bais);        double d = dis.readDouble();        System.out.println(d);    }}