Question

Is there an easy way without having to use java library to concat two int? Maybe math?

say I have 9 and 10 , then I want it to be 910, or 224 and 225 then I want it to be 224225.

Answer 1

Anything in java.lang.* should be fair game…

int a = Integer.parseInt(Integer.toString(9) + Integer.toString(10));

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Addendum:

I do not like the following the syntax because the operator overloading doesn’t declare intent as clearly as the above. Mainly because if the empty string is mistakenly taken out, the result is different.

int a = Integer.parseInt(9 + "" + 10);