java中Calendar设置星期几

package com

import java.util.Calendar

import java.util.Locale

public class Test

{

public static void main(String[] args)

{

Calendar calendar = Calendar.getInstance()

calendar.set(2020, 0, 1)

// 日~六

// 1~7

int desc = 6 - calendar.get(Calendar.DAY_OF_WEEK)

calendar.add(Calendar.DAY_OF_WEEK, desc)

System.out.format(Locale.CHINA, "%1$tY年%1$tm月%1$td号%1tA", calendar)

}

}

Calendar calendar = new GregorianCalendar()//抽象类java.util.Calendar 和它的一个具体子类,java.util.GregorianCalendar

Date trialTime = new Date()

calendar.setTime(trialTime)

calendar.set(GregorianCalendar.DAY_OF_WEEK,

GregorianCalendar.FRIDAY)//设置成Friday

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