基于对象读写

import java.io.*;
//基于对象的读写
class Demo10
{
    public static void main(String s[])throws Exception
    {
        OutputStream       os  = new FileOutputStream("xxx");
        DataOutputStream   dos = new DataOutputStream(os);
        dos.writeInt(2019);
        dos.writeFloat(3.3333f);
        dos.writeDouble(3.333333333333333333333333333);
        dos.writeBoolean(true);
        dos.writeUTF("湖州师范大学");
        dos.close();
        os.close();
        
        InputStream        is  = new FileInputStream("xxx");
        DataInputStream    dis = new DataInputStream(is);
        System.out.println(dis.readInt());
        System.out.println(dis.readFloat());
        System.out.println(dis.readDouble());
        System.out.println(dis.readBoolean());
        System.out.println(dis.readUTF());
        dis.close();
        is.close(); 
    
    }
}