Java Reference
In-Depth Information
denotes successful completion; you can use nonzero status codes to denote various
error conditions.
An Input Dialog Box
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CHAPTER SUMMARY
1. Java has eight primitive types, including four integer types and two floating
point types.
2. A numeric computation overflows if the result falls outside the range for the
number type.
3. Rounding errors occur when an exact conversion between numbers is not
possible.
4. You use a cast (
typeName
) to convert a value to a different type.
5. Use the
Math.round
method to round a floating-point number to the nearest
integer.
6. A
final
variable is a constant. Once its value has been set, it cannot be
changed.
7. Use named constants to make your programs easier to read and maintain.
8. Assignment to a variable is not the same as mathematical equality.
9. The
++
and
--
operators increment and decrement a variable.
10. If both arguments of the / operator are integers, the result is an integer and the
remainder is discarded.
11. The % operator computes the remainder of a division.
