ByteCode representation to byte[]

Question

if I do something like this :

img.getImageBytes(); /*returns byte[] from image */

How can I do the inverse with the string that represents that byte[] ?

@Ashraf Purno I mean the sequence of characters you get from printing a byte[]. — yourAverageDeveloper, Oct 01 '15 at 10:20
refer http://stackoverflow.com/questions/6684665/java-byte-array-to-string-to-byte-array — iprashant, Oct 01 '15 at 10:20

score 1 · Answer 1 · answered Oct 01 '15 at 10:09

1

BufferedImage yourImage = ImageIO.read(new ByteArrayInputStream(bytes_array_of_image));

answered Oct 01 '15 at 10:09

Your solution receives a byte[]. I need it ro receive a String or learn a way to convert the String to byte[]. Already tried string.getBytes() – yourAverageDeveloper Oct 01 '15 at 10:21
2

Will string.getBytes() not help you? – Oct 01 '15 at 10:34

score 1 · Accepted Answer · answered Oct 01 '15 at 10:48

I don't know how you are printing the byte array. But assuming you are using it's toString() method or Arrays.toString() method.

Then you take the string representation of the byte[], strip off leading [ and rearing ] and split it by , into a String[]. Now create a new byte[] with the same size of the String[]. Then iterate over the String[] and convert each element and add to the byte[]. Example

    byte[] b = {1, 2, 3, 4, 5}; //Initial byte array also can be gotten from any other source
    String s = b.toString(); //[1, 2, 3, 4, 5]

    String[] sa = s.substring(1, s.length() - 1).split(",");
    byte[] ba = new byte[sa.length];

    for(int i = 0; i < ba.length; i++) {
        ba[i] = Byte.valueOf(sa[i].trim());
    }

    //Now ba should contain 1, 2, 3, 4, 5

ByteCode representation to byte[]

2 Answers2