【java】Date与String之间的转换及Calendar类：java.text.SimpleDateFormat、public Date parse(String source) throws ParseException和public final String format(Date date)

 1 package 日期日历类;
 2 
 3 import java.text.ParseException;
 4 import java.text.SimpleDateFormat;
 5 import java.util.Date;
 6 
 7 public class TestDate {
 8     public static void main(String[] args) {
 9         Date date=new java.util.Date();
10         System.out.println(date);//Fri Apr 07 22:20:12 CST 2017
11         SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
12         String d=sdf.format(date);
13         System.out.println(d);//2017-04-07 22:20:12
14         String d2="2017-04-06 12:30:30";
15         Date date2=new Date();
16         try {
17             date2 = sdf.parse(d2);
18         } catch (ParseException e) {
19             e.printStackTrace();
20         }
21         System.out.println(date2);//Thu Apr 06 12:30:30 CST 2017
22     }
23 }

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