Converting 32-bit binary string with Integer.parseInt fails

Question

Why does this part of code fail:

Integer.parseInt(\"11000000000000000000000000000000\",2);

Exception in thread \"main\" java.lang.NumberFormatException: For         


        

Answer 1

According to the docs, the max value of an Integer is 2^31-1. Which, in binary is:

1111111111111111111111111111111

In other words, 31 1's in a row.