Question

Assume the following declarations:

int integer;
double preciseReal;
float sloppyReal;
long bigInteger;

Rewrite the following statement using an appropriate cast that makes the error go away

bigInteger = sloppyReal;

Answer 1

If you would like to cast a float (hours) to an int (iHours), you would write:
iHours=(int)hours;
but beware that the fractional part of hours will be truncated, i.e. no proper rounding.

Other castings can be done similarly.

Note that inversely an integer can be "promoted" to a float automatically without casting.

A detailed explanation is given at the link below:
http://www.myhowto.org/java/60-understanding-the-primitive-numeric-type-conversions-in-java/