To convert a string representation of a hex dump to a byte array in Java, you can use the DatatypeConverter class's parseHexBinary method.
To initialize a byte array in Java, you can use the array initializer syntax, like this:
To convert a byte array to a string and back to a byte array in Java, you can use the getBytes method of the String class and the getBytes method of the Charset class.
This error occurs when you are trying to write a string to a file using the write() method in Python 3, but the file is opened in binary mode (using the 'b' flag when opening the file).