package operator; import static java.lang.Character.getType; public class Demo02 { public static void main(String[] args) { long a = 123123123123123L; int b = 123; short c = 10; byte d = 8; double pi = 3.14; System.out.println(pi+a+b+c+d); System.out.println(a+b+c+d);//long System.out.println(b+c+d);//Int System.out.println (c+d);//Int 任意非long整数运算,结果总是Int型 } }