public class 数据类型 { public static void main(String[] args) { //整数 byte a = 1; int b = 2; short c = 3; long d = 4L;//long后面要加L //浮点 float e = 5.6F;//float后面要加F double f = 3.1415926; //字符 char g = 'q'; // String是类 String h = "Wal"; //布尔值:是或非 boolean flag = true; boolean siz = false; } }
2021.7.28