JAVA的Date类的API测试------JAVA

素颜马尾好姑娘i 2024-03-22 14:33 26阅读 0赞

>     import javax.xml.crypto.Data;
>     import java.text.ParseException;
>     import java.text.SimpleDateFormat;
>     import java.util.Calendar;
>     import java.util.Date;
>     import java.util.GregorianCalendar;
>     
>     public class DataTest
>     {
>         public static void main(String[] args) throws ParseException
>         {
>             Date date = new Date();
>             System.out.println(date.toString());
>             long mill = date.getTime();
>             System.out.println(mill);
>             Date date1 = new Date(1683533401804L);
>             java.sql.Date date2 = new java.sql.Date(1683533401804L);
>             System.out.println(date2.toString());
>             System.out.println(date2.getTime());
>             SimpleDateFormat sdf = new SimpleDateFormat();
>             Date date3 = new Date();
>             String str = sdf.format(date3);
>             System.out.println(str);
>             Date dateo = sdf.parse("2023/5/8 下午4:19");
>             System.out.println(dateo);
>             SimpleDateFormat sdf1 = new SimpleDateFormat("EEE,d MMM yyyy HH:mm:ss Z");
>             Date date4 = new Date();
>             String strDate = sdf1.format(date4);
>             System.out.println(strDate);
>             Calendar calendar = Calendar.getInstance();
>             System.out.println(calendar.getClass());
>             System.out.println(calendar.get(Calendar.DAY_OF_MONTH));
>             System.out.println(calendar.get(Calendar.DAY_OF_YEAR));
>             calendar.set(Calendar.DAY_OF_MONTH,23);
>             System.out.println(calendar.get(Calendar.DAY_OF_MONTH));
>             calendar.add(Calendar.DAY_OF_MONTH,23);
>             calendar.add(Calendar.DAY_OF_MONTH,-5);
>             System.out.println(calendar.get(Calendar.DAY_OF_MONTH));
>             Date date5 = calendar.getTime();
>             System.out.println(date5);
>             Date date6 = new Date();
>             calendar.setTime(date5);
>             System.out.println(date6);
>             Date date7 = new Date();
>     //        java.sql.Date date8 = (java.sql.Date)date7;
>     //        System.out.println(date8);
>             SimpleDateFormat sdfq = new SimpleDateFormat("");
>             String pattern = "2022-12-13";
>             Date date9 = sdfq.parse(pattern);
>             java.sql.Date date8 = new java.sql.Date(date9.getTime());
>             System.out.println(date8);
>         }
>     }
> 
> import javax.xml.crypto.Data;  
> import java.text.ParseException;  
> import java.text.SimpleDateFormat;  
> import java.util.Calendar;  
> import java.util.Date;  
> import java.util.GregorianCalendar;
> 
> public class DataTest  
> \{  
> public static void main(String\[\] args) throws ParseException  
> \{  
> Date date = new Date();  
> System.out.println(date.toString());  
> long mill = date.getTime();  
> System.out.println(mill);  
> Date date1 = new Date(1683533401804L);  
> java.sql.Date date2 = new java.sql.Date(1683533401804L);  
> System.out.println(date2.toString());  
> System.out.println(date2.getTime());  
> SimpleDateFormat sdf = new SimpleDateFormat();  
> Date date3 = new Date();  
> String str = sdf.format(date3);  
> System.out.println(str);  
> Date dateo = sdf.parse("2023/5/8 下午4:19");  
> System.out.println(dateo);  
> SimpleDateFormat sdf1 = new SimpleDateFormat("EEE,d MMM yyyy HH:mm:ss Z");  
> Date date4 = new Date();  
> String strDate = sdf1.format(date4);  
> System.out.println(strDate);  
> Calendar calendar = Calendar.getInstance();  
> System.out.println(calendar.getClass());  
> System.out.println(calendar.get(Calendar.DAY\_OF\_MONTH));  
> System.out.println(calendar.get(Calendar.DAY\_OF\_YEAR));  
> calendar.set(Calendar.DAY\_OF\_MONTH,23);  
> System.out.println(calendar.get(Calendar.DAY\_OF\_MONTH));  
> calendar.add(Calendar.DAY\_OF\_MONTH,23);  
> calendar.add(Calendar.DAY\_OF\_MONTH,-5);  
> System.out.println(calendar.get(Calendar.DAY\_OF\_MONTH));  
> Date date5 = calendar.getTime();  
> System.out.println(date5);  
> Date date6 = new Date();  
> calendar.setTime(date5);  
> System.out.println(date6);  
> Date date7 = new Date();  
> // java.sql.Date date8 = (java.sql.Date)date7;  
> // System.out.println(date8);  
> SimpleDateFormat sdfq = new SimpleDateFormat("");  
> String pattern = "2022-12-13";  
> Date date9 = sdfq.parse(pattern);  
> java.sql.Date date8 = new java.sql.Date(date9.getTime());  
> System.out.println(date8);  
> \}  
> \}