java计算工作日方法

java计算工作日,实测有效

public static Date getDate(Date currentDate, int days){
Calendar calendar= Calendar.getInstance();
calendar.setTime(currentDate);
int i=0;
while(i<days){
calendar.add(Calendar.DATE,-1);//整数往后推日期,负数往前推日期
i++;
if(calendar.get(Calendar.DAY_OF_WEEK)==Calendar.SATURDAY ||
calendar.get(Calendar.DAY_OF_WEEK)==Calendar.SUNDAY){
i--;
}
}
SimpleDateFormat dateformat=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println(dateformat.format(calendar.getTime()));
return calendar.getTime();
}