public class Libr{class Book{String name1; int num;}class Student{ String name2; int id; String borrow(int date,Book a){ return "studenst's name:"+name2+" student's id:"+id+" borrow date is"+date; &nbs...【阅读全文】
import java.util.Random;public class RandomTest { public static void main(String[] args) { for (int ii = 0; ii < 100; ii++) { System.out.println(getRandomNumber1(0, 9)); ...【阅读全文】