摘要:
运算符 2. package operator; public class Demo01 { public static void main(String[] args) { //二元运算符 int a = 10; int b = 20; int c = 25; int d = 25; System 阅读全文
摘要:
类型转换 2. public class Demo04 { public static void main(String[] args) { int i = 128; byte b = (byte) i;//-128 - 127 所以会内存溢出然后补码 System.out.println(i); 阅读全文