源代码：

package com.oracle.core;

import java.util.Calendar;

import java.util.GregorianCalendar;

import java.util.Scanner;

public class CalendarStudy

{

Calendar c=new GregorianCalendar();

Scanner scanner=new Scanner(System.in);

public static void main(String[] args)

{

CalendarStudy study=new CalendarStudy();

study.clcStartAndEnd();

}

public void clcStartAndEnd()

{

System.out.println("请输入你指定的时间");

System.out.println("格式为:2019-04-01");

String input=scanner.next();

String[] inputs=input.split("-");

int year=Integer.parseInt(inputs[0]);

int month=Integer.parseInt(inputs[1]);

int day=Integer.parseInt(inputs[2]);

c.set(year, month-1, day);

for(int i=7;i>0;i--)

{

c.add(Calendar.DAY_OF_YEAR, -i);

System.out.println(c.get(Calendar.YEAR)+"年"+(c.get(Calendar.MONTH)+1)+"月"+c.get(Calendar.DATE)+"日");

c.add(Calendar.DAY_OF_YEAR, i);

}

System.out.println(c.get(Calendar.YEAR)+"年"+(c.get(Calendar.MONTH)+1)+"月"+c.get(Calendar.DATE)+"日");

for(int i=0;i<7;i++)

{

c.add(Calendar.DAY_OF_YEAR, 1);

System.out.println(c.get(Calendar.YEAR)+"年"+(c.get(Calendar.MONTH)+1)+"月"+c.get(Calendar.DATE)+"日");

}

}

}

运行结果：