how to convert OX12 to decimal

Question

I need to convert hexadecimal value which is OX12 to decimal in JAVA,

as I knew hexadecimal is based 16 (1..9, a..f), but in this case, I don't know how to convert with that value.

Can someone help me?

Thanks so much

Answer 1

If the number is a String, you can use the parseInt method of the Integer class with first argument "12" (the number in hex) and second argument 16, the radix, or base, of the number

int number = Integer.parseInt("12", 16);
System.out.println(number);
// output is 18

If the number is not a String, you can simply do the following:

int number = 0x12;
System.out.println(number);
// output is 18