公曆

Question

我需要編寫使用的GregorianCalendar，將打印出下列項目的應用程序：
1.我的生日
2.當我將在1十億秒老

我有什麼到目前爲止：

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)); 

} 

我收到錯誤，你能幫我幫忙找到它們嗎？

Answer 1

試着這麼做：

GregorianCalendar evansBirthday = new GregorianCalendar(1986,Calendar.November, 25);  
System.out.println(evansBirthday); 
evansBirthday.add(1000000000000); // A billion seconds 
System.out.println(evansBirthday); 

Answer 2

我想你應該複製和過去的錯誤....

但是對於初學者...

1. Calendar.November變化Calendar.NOBEMBER

2. 您無法打印System.out.println(evansBirthday)此內容會打印一些很長的GregorianCalendar java cod。所以你必須將它轉換爲java.util.Calendar中的Date對象。

所以加這一點，這將允許您打印出反黑

Date newEvansBirthday = evansBirthday.getTime(); 

System.out.println(newEvansBirthday); 

1. 加入時間evansBirthday.add(evansBirthday.SECOND, 1000000000);

Answer 3

這會給你你需要的準確輸出。

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())); 
    } 
} 

輸出將是以下

11/25/1986 
08/03/2018