939岁的初恋是19岁

摘要： 练习题1：输出一个长整型的变量 import java.util.Scanner; public class L { public static void main(String[] args) { long a ; a=123456789012345l; System.out.println(a) 阅读全文

摘要： import java.util.Scanner; public class test { public static void main(String[] args) { Scanner Hy=new Scanner(System.in); double x1,x2,y1,y2; System.o 阅读全文

摘要： import java.util.Scanner;public class test { public static void main(String[] args) { Scanner Hy=new Scanner(System.in); String Hyper; System.out.prin 阅读全文

摘要： public class aaa{ public static void main(String[] args){ System.out.println(" J A V V A "); System.out.println(" J A A V V A A "); System.out.println 阅读全文

摘要： public class AverageSpeed{ public static void main(String[]args){ double speedkm =60/(45.5/14); double speedm = speedkm /1.6; system.out.println（“aver 阅读全文

摘要： private final double PI=3.1415; public double accountGirth(double r){ return 2*PI*5.5;}public double accountArea(double r){ return PI*5.5*5.5;} 阅读全文