java 阳历日历
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Gregorian Calendar
提问by Evan Dissanayake
I need to write an application that uses the GregorianCalendar and will print out the following items:
1. My date of birth
2. When I will be 1 billion seconds old
我需要编写一个使用 GregorianCalendar 的应用程序，并将打印出以下项目：
1. 我的出生日期
2. 我什么时候会老 10 亿秒
What I have so far:
到目前为止我所拥有的：
import java.util.Calendar;
import java.util.GregorianCalendar;
public class GregorianCalendar {
public static void main(String[] args){
GregorianCalendar cal = new GregorianCalendar(); // Today's date
GregorianCalendar evansBirthday = new GregorianCalendar(1986,Calendar.November, 25);
System.out.println(evansBirthday);
//evansBirthday.add(Calendar.OCTOBER, 11574);
evansBirthday.
System.out.println(cal.add(Calendar.OCTOBER, 11574));
}
I am getting errors can you assist in helping me find them?
我遇到了错误，你能帮我找到它们吗？
回答by ObieMD5
This will give you the exact output you need.
这将为您提供所需的确切输出。
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
public class GregorianCalendar {
public static void main(String[] args){
GregorianCalendar evansBirthday = new GregorianCalendar(1986,Calendar.NOVEMBER, 25);
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyy");
System.out.println(sdf.format(evansBirthday.getTime()));
evansBirthday.add(evansBirthday.SECOND, 1000000000);
System.out.println(sdf.format(evansBirthday.getTime()));
}
}
Output will be the following
输出将如下
11/25/1986
08/03/2018
回答by Rafa
Try something like:
尝试类似：
GregorianCalendar evansBirthday = new GregorianCalendar(1986,Calendar.November, 25);
System.out.println(evansBirthday);
evansBirthday.add(1000000000000); // A billion seconds
System.out.println(evansBirthday);
回答by Eric Huang
I think you should copy and past the errors....
我认为你应该复制和过去的错误....
But for starters...
但是对于初学者...
Calendar.November change to
Calendar.NOBEMBERYou can not print
System.out.println(evansBirthday)this will print some long GregorianCalendar java cod. so you must convert it to Date object in the java.util.Calendar.
日历。十一月更改为
Calendar.NOBEMBER你不能打印
System.out.println(evansBirthday)这会打印一些很长的 GregorianCalendar java cod。因此您必须将其转换为 java.util.Calendar 中的 Date 对象。
so add this, this will allow you to print out the dats
所以添加这个，这将允许你打印出数据
Date newEvansBirthday = evansBirthday.getTime();
System.out.println(newEvansBirthday);
- adding time
evansBirthday.add(evansBirthday.SECOND, 1000000000);
- 添加时间
evansBirthday.add(evansBirthday.SECOND, 1000000000);
