Java 日历 get()方法

java.util.Calendar.get()方法是 java.util.Calendar类的一个方法。Calendar类提供了一些方法来实现包外的具体日历系统。Calendar字段的一些例子有:年、日期、月、星期、年中之日、年中之周、分、秒、小时、上午、下午、月中之周、月中之日、日中之小时。

语法 :

public int get(int field)

其中，field代表给定的日历字段，该函数返回给定字段的值。的值。

异常： 如果指定的字段超出了范围，就会抛出ArrayIndexOutOfBoundsException。

应用：

示例1： 获取日期、月份、年份

// Java code to implement calendar.get() functionimport java.util.*;  class GFG {      // Driver codepublic static void main(String[] args) {      // creating a calendar    Calendar c = Calendar.getInstance();      // get the value of DATE field    System.out.println("Day : " +                        c.get(Calendar.DATE));          // get the value of MONTH field    System.out.println("Month : " +                        c.get(Calendar.MONTH));                          // get the value of YEAR field    System.out.println("Year : " +                         c.get(Calendar.YEAR));}}

输出:

Day : 1Month : 2Year : 2018

例2： 获取星期、年日、月周、年周的数据。

// Java Code of calendar.get() functionimport java.util.*;  class GFG {      // Driver codepublic static void main(String[] args) {      // creating a calendar    Calendar c = Calendar.getInstance();      // get the value of DATE_OF_WEEK field    System.out.println("Day of week : " +                         c.get(Calendar.DAY_OF_WEEK));                              // get the value of DAY_OF_YEAR field    System.out.println("Day of year : " +                        c.get(Calendar.DAY_OF_YEAR));                              // get the value of WEEK_OF_MONTH field    System.out.println("Week in Month : " +                         c.get(Calendar.WEEK_OF_MONTH));                              // get the value of WEEK_OF_YEAR field    System.out.println("Week in Year : " +                         c.get(Calendar.WEEK_OF_YEAR));                            // get the value of DAY_OF_WEEK_IN_MONTH field    System.out.println("Day of Week in Month : " +                        c.get(Calendar.DAY_OF_WEEK_IN_MONTH));}}

输出:

Day of week : 5Day of year : 60Week in Month : 1Week in Year : 9Day of Week in Month : 1

例子3： 获取小时、分钟、秒和AM_PM。

// Implementation of calendar.get()// function in Javaimport java.util.*;  class GFG {      // Driver code    public static void main(String[] args)    {        // creating a calendar        Calendar c = Calendar.getInstance();          // get the value of HOUR field        System.out.println("Hour : " + c.get(Calendar.HOUR));          // get the value of MINUTE field        System.out.println("Minute : " + c.get(Calendar.MINUTE));          // get the value of SECOND field        System.out.println("Second : " + c.get(Calendar.SECOND));          // get the value of AM_PM field        System.out.println("AM or PM : " + c.get(Calendar.AM_PM));          // get the value of HOUR_OF_DAY field        System.out.println("Hour (24-hour clock) : " + c.get(Calendar.HOUR_OF_DAY));    }}

输出:

Hour : 6Minute : 51Second : 53AM or PM : 0Hour (24-hour clock) : 6