Question

when should "'double'" be taken in java programing​

Answer 1

i1/i2 will be 0. Since i1 and i2 are both integers.

If you have int1/int2, if the answer is not a perfect integer, the digits after the decimal point will be removed. In your case, 2/5 is 0.4, so you'll get 0.

You can cast i1 or i2 to double (the other will be implicitly converted)

double d = 3 + (double)i1/i2 +2;

Answer 2

Heya Chika,✌️

The float data type is a single-precision 32-bit IEEE 754 floating point and the double data type is a double-precision 64-bit IEEE 754 floating point.

hope u got it!
mark as brainliest mate ☺️