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I have a String array. I want to convert it to byte array. I use the Java program. For example:
String str[] = {"aa", "55"}; convert to:
byte new[] = {(byte)0xaa, (byte)0x55}; What can I do?
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To convert hex string to byte array, you need to first get the length of the given string and include it while creating a new byte array. byte[] val = new byte[str. length() / 2]; Now, take a for loop until the length of the byte array.
To obtain a string in hexadecimal format from this array, we simply need to call the ToString method on the BitConverter class. As input we need to pass our byte array and, as output, we get the hexadecimal string representing it. string hexString = BitConverter. ToString(byteArray);
Now, let's convert a hexadecimal digit to byte. As we know, a byte contains 8 bits. Therefore, we need two hexadecimal digits to create one byte.
String str = "Your string"; byte[] array = str.getBytes(); Looking at the sample I guess you mean that a string array is actually an array of HEX representation of bytes, don't you?
If yes, then for each string item I would do the following:
build a byte value, where first char is higher bits and second char is lower ones. E.g.
int byteVal = (firstCharNumber << 4) | secondCharNumber; If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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