java日历类add方法_Java日历computeFields()方法及示例
java日歷類add方法
日歷類的computeFields()方法 (Calendar Class computeFields() method)
computeFields() method is available in java.util package.
在java.util包中提供了validateFields()方法 。
computeFields() method is used to convert current ms(milliseconds) time value time to calendar field values in fields.
computeFields()方法用于將當前ms(毫秒)時間值time轉換為字段中的日歷字段值。
computeFields() method is a non-static method, it is accessible with the class object and if we try to access these methods with the class name then we will get an error.
computeFields()方法是一種非靜態方法,可通過類對象訪問,如果嘗試使用類名訪問這些方法,則會收到錯誤消息。
computeFields() method does not throw an exception at the time of computing Calendar fields.
在計算Calendar字段時, computeFields()方法不會引發異常。
Syntax:
句法:
protected void computeFields();Parameter(s):
參數:
It does not accept any parameter.
它不接受任何參數。
Return value:
返回值:
The return type of the method is void, it returns nothing.
該方法的返回類型為void ,不返回任何內容。
Example:
例:
// Java Program to demonstrate the example of // void computeFields() method of Calendarimport java.util.*;public class ComputeFieldOfCalendar extends GregorianCalendar {public static void main(String[] args) {// Instantiating a Calendar objectComputeFieldOfCalendar ca = new ComputeFieldOfCalendar();// Display current calendarSystem.out.println("ca: " + ca.getTime());// By using clear(int fi) method to set the field unsetca.clear(GregorianCalendar.MONTH);// Display calendarSystem.out.println("ca.clear(GregorianCalendar.MONTH): " + ca.getTime());// By using set() method is to set a month // and invoke computeFields()ca.set(GregorianCalendar.MONTH, 6);ca.computeFields();// Display calendarSystem.out.println("ca.set(GregorianCalendar.MONTH,6): " + ca.getTime());} }Output
輸出量
ca: Fri Jan 24 12:24:23 GMT 2020 ca.clear(GregorianCalendar.MONTH): Fri Jan 24 12:24:23 GMT 2020 ca.set(GregorianCalendar.MONTH,6): Fri Jan 24 12:24:23 GMT 2020翻譯自: https://www.includehelp.com/java/calendar-computefields-method-with-example.aspx
java日歷類add方法
總結
以上是生活随笔為你收集整理的java日历类add方法_Java日历computeFields()方法及示例的全部內容,希望文章能夠幫你解決所遇到的問題。
- 上一篇: 图论 弦_混乱的弦
- 下一篇: r语言简介_R语言简介