Hi all,

I have the following code snippet.

public static void main(String[] args) {
 short a = 4;
 short b = 5;
 short c = 5 + 4;
 short d = a;
 short e = a + b; // does not compile (expression treated as int)


 short z = 32767;
 short z_ = 32768; // does not compile (out of range)

 test(a);
 test(7); // does not compile (not applicable for arg int)
}

public static void test(short x) { }

Is the following summary correct (with regard to only the example above using short)?

• direct initializations without casting is only possible using literals or single variables (as long as the value is in the range of the declared type)
• if the rhs of an assignment deals with expressions using variables, casting is necessary

But why exactly do I need to cast the argument of the second method call taking into account the previous summary?