Java之DataInputStream和DataOutputStream-用流操作基本数据类型

 package FileDemo;

 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;

 public class DataStream {

     /**
      * @param args
      * @throws IOException
      */
     public static void main(String[] args) throws IOException {

         DataOutputStream dos = new DataOutputStream(new FileOutputStream(
                 "data.txt"));
         dos.writeInt(2050);
         dos.close();
         DataInputStream dis = new DataInputStream(new FileInputStream(
                 "data.txt"));
         int num = dis.readInt();
         System.out.println("num=" + num);
         dis.close();
     }

 }