摘要：public class Test { public static void main(String[] args){ //输出一个长整型的变量 123456789012345 long h = 123456789012345l; System.out.println(h); //输出一个单精度的小数常量 2.4 ... 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.out.println("请键入X1的... 阅读全文

摘要：public class Test{ public static void main(String[] args){ int i; for(i = 1;i <= 5;i++){ System.out.println("Welcome to java"); } } } public class Test{ ... 阅读全文