import java.util.Calendar;
import java.util.GregorianCalendar;public class StringBufferDemo {
public static void main(String[] args) {
Calendar cal=null;
cal=new GregorianCalendar();
System.out.println(cal.get(Calendar.YEAR));
}}import java.util.Calendar;
import java.util.GregorianCalendar;public class StringBufferDemo {
public static void main(String[] args) {
Calendar cal=null;
cal=new GregorianCalendar();
System.out.println(Calendar.YEAR);
}}[/为什么前一个输出2011后面一个输出1;
import java.util.GregorianCalendar;public class StringBufferDemo {
public static void main(String[] args) {
Calendar cal=null;
cal=new GregorianCalendar();
System.out.println(cal.get(Calendar.YEAR));
}}import java.util.Calendar;
import java.util.GregorianCalendar;public class StringBufferDemo {
public static void main(String[] args) {
Calendar cal=null;
cal=new GregorianCalendar();
System.out.println(Calendar.YEAR);
}}[/为什么前一个输出2011后面一个输出1;
楼上两位都是正解,YEAR是个静态常量,就像你在Java类里定义的:
public static final int StaticValue = 1;
java.util.Calendar
public static final int ALL_STYLES 0
public static final int AM 0
public static final int AM_PM 9
public static final int APRIL 3
public static final int AUGUST 7
public static final int DATE 5
public static final int DAY_OF_MONTH 5
public static final int DAY_OF_WEEK 7
public static final int DAY_OF_WEEK_IN_MONTH 8
public static final int DAY_OF_YEAR 6
public static final int DECEMBER 11
public static final int DST_OFFSET 16
public static final int ERA 0
public static final int FEBRUARY 1
public static final int FIELD_COUNT 17
public static final int FRIDAY 6
public static final int HOUR 10
public static final int HOUR_OF_DAY 11
public static final int JANUARY 0
public static final int JULY 6
public static final int JUNE 5
public static final int LONG 2
public static final int MARCH 2
public static final int MAY 4
public static final int MILLISECOND 14
public static final int MINUTE 12
public static final int MONDAY 2
public static final int MONTH 2
public static final int NOVEMBER 10
public static final int OCTOBER 9
public static final int PM 1
public static final int SATURDAY 7
public static final int SECOND 13
public static final int SEPTEMBER 8
public static final int SHORT 1
public static final int SUNDAY 1
public static final int THURSDAY 5
public static final int TUESDAY 3
public static final int UNDECIMBER 12
public static final int WEDNESDAY 4
public static final int WEEK_OF_MONTH 4
public static final int WEEK_OF_YEAR 3
public static final int YEAR 1
public static final int ZONE_OFFSET 15
域:public static final 使用这种方式定义的静态常量。
可以单独作为值使用,也可以参照MAP的方式,作为一种获取VALUE的KEY值。也可理解为状态开关,当调用Calendar.YEAR的时候,就把Calendar的(GET)状态开关拨到1,取得值就是年份。而这个状态开关自身的值只是1而已。
Calendar.class 源码里的东西Calendar.YEAR是个定值常量
//我的是2012耶
Calendar cal=null;
cal=new GregorianCalendar();
System.out.println(cal.get(Calendar.YEAR));