循环日期

public class Test {
public static void main(String[] args) {
Date dt = new Date();
for(int i=1;i<=30;i++){
System.out.println(setDateByDay(dt,i));
}

}
public static Date setDateByDay(Date dt,int day){
Calendar cal = Calendar.getInstance();
cal.setTime(dt);
cal.set(Calendar.DAY_OF_MONTH, day);
return cal.getTime();
}
}