Short-circuiting is where an expression is stopped being evaluated as soon as its outcome is determined. So for instance: if (a == b || c == d || e == f) { // Do something } If a == b is true, then c == d and e == f are never evaluated at all, … Read more
There are two questions here. The first is “why is short plus short result in int?” Well, suppose short plus short was short and see what happens: short[] prices = { 10000, 15000, 11000 }; short average = (prices[0] + prices[1] + prices[2]) / 3; And the average is, of course, -9845 if this calculation … Read more
If we look at the Rationale for International Standard—Programming Languages—C in section 6.3.1.8 Usual arithmetic conversions it says (emphasis mine going forward): The rules in the Standard for these conversions are slight modifications of those in K&R: the modifications accommodate the added types and the value preserving rules. Explicit license was added to perform calculations … Read more
Almost correct: System.out.println((int)Math.signum(input.nextInt() – input.nextInt()); “Almost” due to possible integer overlow. Also your longer code might actually be faster (signum() operaton on floating-point numbers), not to mention more readable.
You can better try with: a= (short)1; instead of a=a (short)1; ClassCastException is:- Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance. Although in your code it is not making sense how you receive the ClassCastException even after if we change as … Read more