Question

How to read byte array from file using DataInputStream() in Java

Answer 1

package javaapplication1;

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

public class JavaApplication1 {

    public static void main(String[] args) throws IOException {

        String sFilePath = "d://data.txt";

        try {

            FileInputStream fis = new FileInputStream(sFilePath);

            int count = fis.available();
            try (DataInputStream dis = new DataInputStream(fis)) {
                byte bArr[] = new byte[count];
                dis.read(bArr);
                for (byte b : bArr) {
                    char ch = (char)b;
                    System.out.print(ch + " ");
                }
            }

        } catch (IOException ioe) {
            System.out.println(ioe);
        }
    }
}

/*
      
run:

0   1   0   2   3
  
*/

 

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