why explicit type casting required from double to float but not from int to byte?

Question

Consider following statement:

byte by = 5; //works fine

literal \'5\' is of type int and small enough to fit into a variable of type byt

Answer 1

Agreed with Jon, However, I would like to add that

byte by = 5;     //works fine until the number is less than 128 

This is because one byte can only hold upto -128 to 127. Once you will try to enter number above 127, you will get the same error like you get when storing double value into float.

byte by =  128; //compilation error

So for agreeing the lost of the conversion data, you need to perform the explicit conversion.

byte by = (byte) 128; // work fine