当前时间显示

public class SJ{
    public static void main(String [] args){
        Calendar c = Calendar.getInstance();
        int hour = c.get(Calendar.HOUR_OF_DAY);
        System.out.println(hour);
        if (hour>=14 && hour < 18){
            System.out.println("下午好");
        } else if (hour>= 18 && hour <23){
            System.out.println("晚上好");
        }else if(hour >= 0 && hour <2){
            System.out.println("凌晨好");
        }else if(hour >=2 && hour <6){
            System.out.println("起床尿尿");
        }else if (hour >=6 && hour<9){
            System.out.println("上午好");
        }else if (hour >=9 && hour <12){
            System.out.println("上午好");
        }else{
            System.out.println("该吃饭了");
        }
    }
}