Question

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Converting char array into byte array and back again

I have a password in char[] and i want this password in byte[] without creating any String. Please suggest the best possible way.

Answer 1

If ASCII or ISO-8859-1 encoding is all you need you can copy one char at a time.

char[] chars = ...
byte[] bytes = new byte[chars.length];
for(int i = 0; i < chars.length; i++)
    bytes[i] = (byte) chars[i];