摘要：package homework; import java.util.Scanner; public class Test { public static void main(String[] args) { int number1 = (int) (System.currentTimeMillis 阅读全文

摘要：import java.util.Scanner; public class Test { public static void main(String[] args) { System.out.println(5+5= + 5 + 5); int a = 3,b; b = a++; System. 阅读全文

摘要：public class Test { public static void main(String[] args) //输出一个长整型的变量 { long h = 123456789012345l; System.out.println(h); //输出一个单精度的小数常量 float h1 = 阅读全文