Java Fundamentals Hardening IO Stream Note 27:fileinputstream reading data one byte array at a time byte[]

1. FileInputStream reading data One byte array at a time byte[]

Use FileInputStream to read one byte array at a time:

int read (byte[] b)

　　return value : The return value is actually the number of bytes actually read.

2. code example:

1  PackageCom.himi.fileinputstream;2 3 ImportJava.io.FileInputStream;4 Importjava.io.IOException;5 6 7 8 /**9  * Ten * Use FileInputStream one byte array at a time: int read (byte[] b) One * Return value: The return value is actually the number of bytes actually read A  *  -  */ -  the  -  Public classFileInputStreamDemo1 { -  -      Public Static voidMain (string[] args)throwsIOException { +FileInputStream FIS =NewFileInputStream ("A.txt"); -     //Development Time final version code +         byte[] Bys =New byte[1024]; A         intLen = 0; at          while(len = Fis.read (bys))! =-1) { -System.out.print (NewString (bys,0, Len)); -         } -          -     } -  in}

Run the effect as follows:

Java Fundamentals Hardening IO Stream Note 27:fileinputstream reading data one byte array at a time byte[]