I must convert string of 1324312321 to array of integers in java

this is fine. I could use integer parseint and string substring method

but how do I repesent -12312312 to my original array of integer..

the fact that - is a char / string and convert to array of integer would alter the value ( even though I convert - to integer-equivalent , it would change the rest of 12312312)

it must be an array of integers and how should I convert negative numbers and still keeep the same value

somehow reminding me of two complements trick but i dont think i need to go down to binary level in my program..

any other trick for doing this?

thanks!