Java calculates the day of the week a date is

java Gets the day of the week for a specified date: (Recommended: java video tutorial)

To get the day of the week for a specified date, you can use the following two methods Methods to obtain the day of the week:

1. Use the Calendar class

//根据日期取得星期几
public static String getWeek(Date date){
String[] weeks = {"星期日","星期一","星期二","星期三","星期四","星期五","星期六"};
Calendar cal = Calendar.getInstance();
cal.setTime(date);
int week_index = cal.get(Calendar.DAY_OF_WEEK) - 1;
if(week_index<0){
week_index = 0;
}
return weeks[week_index];
}

2. Use the SimpleDateFormat class

//根据日期取得星期几
public static String getWeek(Date date){
SimpleDateFormat sdf = new SimpleDateFormat("EEEE");
String week = sdf.format(date);
return week;
}

Note: Format string There is case sensitivity

For the parameters passed in when creating SimpleDateFormat: EEEE represents the day of the week, such as "Thursday"; MMMM represents the Chinese month, such as "November"; MM represents the month, such as "11";

yyyy represents the year, such as "2010"; dd represents the day, such as "25"

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