1.获取当前日期
import java.util.Date;
import java.text.SimpleDateFormat;public class DateDemo
{ public static void main(String[] args){ Date date = new Date(); SimpleDateFormat sdf = new SimpleDateFormat("yy/MM/dd HH:mm:ss"); String now = sdf.format(date); System.out.println(now); }}2.获取随机数
import java.util.Random;
public class RandomDemo{ public static void main(String[] args){Random random = new Random();
int i = random.nextInt(10); System.out.println(i); }}