关于java的while语句

public class hbjh {
    public static void main(String[]args){
        int a=6;
        while (a<10&&a>0) {
            System.out.println("哈喽，早上好！");
            System.out.println("哈喽，中午好！");
            System.out.println("哈喽，晚上好！");
            a++;
        }
        System.out.println("哈喽，你好！");
        }
    }