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/* Read byte array from file using DataInputStream This Java example shows how to read an array of bytes from file using read or readFully method of Java DataInputStream class. */ import java.io.DataInputStream; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; public class ReadByteArrayFromFile { public static void main(String[] args) { String strFilePath = "C://FileIO//readByteArray.txt"; try { //create FileInputStream object FileInputStream fin = new FileInputStream(strFilePath); /* * To create DataInputStream object, use * DataInputStream(InputStream in) constructor. */ DataInputStream din = new DataInputStream(fin); /* * To read an array of bytes from file, use * int read(byte b[]) method of Java DataInputStream class. * * This method reads bytes from input stream and store them in array of bytes. * It returns number of bytes read. */ byte b[] = new byte[10]; din.read(b); /* * To close DataInputStream, use * void close() method. */ din.close(); } catch(FileNotFoundException fe) { System.out.println("FileNotFoundException : " + fe); } catch(IOException ioe) { System.out.println("IOException : " + ioe); } } } |
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