In Java, how to store large numbers in an array?

Question

In Java, how can I store numbers in an array, I mean very long digits, for example up to 1 trillion, so I can access them and print in words what they are?

Answer 1

You need BigInteger if it's really that big. For a trillion. Long enough

Answer 2

1 trillion is not that big - just use long , which can store a number in size 9223372036854775807 (more than a quintillion):

 long[] numbers = new long[1000]; 

To save arbitrarily large numbers, use BigInteger , but they can be tricky:

 BigInteger[] numbers = new BigInteger[1000];