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  • 6、数据流

     1 package Io;
     2 
     3 import java.io.DataInputStream;
     4 import java.io.DataOutputStream;
     5 import java.io.FileInputStream;
     6 import java.io.FileNotFoundException;
     7 import java.io.FileOutputStream;
     8 import java.io.IOException;
     9 
    10 public class TestWriteNumber_Io {
    11     public static void main(String[] args) {
    12         FileOutputStream fos = null;
    13         DataOutputStream dos = null;
    14         FileInputStream fis = null;
    15         DataInputStream dis = null;
    16 
    17         try {
    18             fos = new FileOutputStream("C:\Users\Samuel\Pictures\abc.dat");
    19             // 如果希望存储基本数据类型就用DataOutputStream,也是过滤流
    20             dos = new DataOutputStream(fos);
    21             dos.writeInt(11231231);
    22             dos.writeInt(2);
    23             dos.writeInt(3);
    24             dos.writeInt(4);
    25             fis = new FileInputStream("C:\Users\Samuel\Pictures\abc.dat");
    26             // 从文件读取数据用DataInputStream,同样是过滤流 
    27             dis = new DataInputStream(fis);
    28 //            dis = new DataInputStream(new FileInputStream("C:\Users\Samuel\Pictures\abc.dat"));
    29             System.out.println(dis.readInt());
    30             System.out.println(dis.readInt());
    31             System.out.println(dis.readInt());
    32             System.out.println(dis.readInt());
    33         } catch (FileNotFoundException e) {
    34             e.printStackTrace();
    35         } catch (IOException e) {
    36             e.printStackTrace();
    37         } finally {
    38             if (dos != null)
    39                 try {
    40                     dos.close();
    41                 } catch (IOException e) {
    42                     // TODO Auto-generated catch block
    43                     e.printStackTrace();
    44                 }
    45         }
    46     }
    47 }
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  • 原文地址:https://www.cnblogs.com/Akke/p/5017615.html
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