在java中将二进制文件转换为字节数组？

Question

I've previously converted a byte array into a file conataining the binary equivalents of all the values in that byte array. Now how do do I convert those binary values back into a byte array??

Like for example...my byte array starts with values 7, 17, 118, 7.... And my text file conatining the binary values shows 00000111000100010111011000000111....

Answer 1

Read the file 8 characters at a time and use Integer.parseInt(chars, 2) where chars is the 8 characters you read in as a String. Repeat until the file is completely read.

Answer 2

use the input stream

InputStream is = new FileInputStream(new File("filen.ame"));
is.read(byte[] b, 0, len(file))

Input Stream Documentation