Java Fundamentals Hardening IO Flow Note 18:fileoutputstream writing data

1. Create a byte output stream object and do a few things:

(1) Call system function to create file
(2) Create Fos object
(3) Point the Fos object to this file

2. code example:

1  PackageCom.himi.fileoutputstream;2 3 ImportJava.io.File;4 Importjava.io.FileNotFoundException;5 ImportJava.io.FileOutputStream;6 Importjava.io.IOException;7 8 /*9 * Create file Fos.txt, write string: Hello WorldTen  *  One * Operation flow of the output of the byte stream: A * A: Create byte output stream object - * B: Write Data - * C: Release Resources the  */ -  -  Public classFileOutputStreamDemo1 { -  +      Public Static voidMain (string[] args)throwsIOException { -         //fileoutputstream (file file) + //File File = new file ("Fos.txt"); A //FileOutputStream fos = new FileOutputStream (file); at          -         //fileoutputstream (String filename) -         /** - * Create a byte output stream object to do a few things: - * A: Call system function to create file - * B: Create Fos object in * C: Point the Fos object to this file -          */ toFileOutputStream FOS1 =NewFileOutputStream ("Fos.txt"); +          -         //Write Data theString str =NewString ("Hello,world"); *         byte[] bytes =str.getbytes (); $ fos1.write (bytes);Panax Notoginseng         //frees up resources to make stream objects garbage so that they can be reclaimed by the garbage collector - fos1.close (); the  +     } A  the}

The output results are as follows:

Java Fundamentals Hardening IO Flow Note 18:fileoutputstream writing data