How can I store a long binary code into a variable in a Java program?

Question

I wan't to create a Java application that has user friendly interface and gets the encrypted product key from the user and decrypt it using the binary conversion method, I have the code to convert the text from binary but don't know how to store huge integers in a specific required variable. Please could someone help me?

Answer 1

One (not necessarily best) possibility is to store binary digits as an ArrayList of ints, each with value 0 or 1.

Answer 2

I'm new and don't know much about Java but I think you're trying to explain like this, array(01010101, 0101010, 101010, 101001); is that what you're trying to explain?

Answer 3

I'm not sure if you want to store the value after convert it, but for big integers you can use the BigInteger class https://docs.oracle.com/javase/7/docs/api/java/math/BigInteger.html

You can use

BigInteger bi = new BigInteger(value);

if you want add a value

bi = bi.add(new BigInteger(newValue);

Answer 4

jh