Questions tagged «type-promotion»

3
为什么“短三十= 3 * 10”是合法的任务？
如果short自动升级为int算术运算，那么为什么是： short thirty = 10 * 3; 对short变量的合法赋值thirty？ 反过来，这是： short ten = 10; short three = 3; short thirty = ten * three; // DOES NOT COMPILE AS EXPECTED 以及这个： int ten = 10; int three = 3; short thirty = ten * three; // DOES NOT COMPILE AS EXPECTED …
3
参数中的Java类型提升
我偶然发现了以下片段： public class ParamTest { public static void printSum(int a, double b) { System.out.println("In intDBL " + (a + b)); } public static void printSum(long a, long b) { System.out.println("In long " + (a + b)); } public static void printSum(double a, long b) { System.out.println("In doubleLONG " + (a …
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