Java 使用GregorianCalendar类

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import java.util.Calendar;/*来自 N o w J a v a . c o m - 时  代  Java*/

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import java.util.Date;

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import java.util.GregorianCalendar;

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public class Main {

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  public static void main(String[] args) {

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    GregorianCalendar gc = new GregorianCalendar();

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    System.out.println("Current Date: " + getStr(gc));

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    // Add 1 year 

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    gc.add(Calendar.YEAR, 1);        

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    System.out.println("After adding a year: " + getStr(gc));

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    // Add 15 days

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    gc.add(Calendar.DATE, 15);        

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    System.out.println("After adding 15 days: " + getStr(gc));

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    long millis = gc.getTimeInMillis();

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    Date dt = gc.getTime();

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    System.out.println("Time in millis: " + millis);/* 来 自 时 代      J a v a   公   众 号 - nowjava.com*/

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    System.out.println("Time as Date: " + dt);

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  }

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  public static String getStr(GregorianCalendar gc) {

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    int day = gc.get(Calendar.DAY_OF_MONTH);

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    int month = gc.get(Calendar.MONTH);

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    int year = gc.get(Calendar.YEAR);

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    int hour = gc.get(Calendar.HOUR);

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    int minute = gc.get(Calendar.MINUTE);

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