学习Java6(十二)日期工具类TimeUnit

学习Java6(十二)日期工具类TimeUnit

比较有用的一个东西

 1  import  java.util.concurrent.TimeUnit;
 2 
 3  public   class  TimeUnitDemo {
 4       private  TimeUnit timeUnit  = TimeUnit.DAYS;
 5 
 6       public   static   void  main(String[] args) {
 7          TimeUnitDemo demo  =   new  TimeUnitDemo();
 8          demo.outInfo();
 9          demo.timeUnit  = TimeUnit.HOURS;
10          demo.outInfo();
11          demo.timeUnit  = TimeUnit.MINUTES;
12          demo.outInfo();
13          demo.timeUnit  = TimeUnit.SECONDS;
14          demo.outInfo();
15      }
16 
17       public   void  outInfo() {
18          System.out.println(timeUnit.name());
19          System.out.println(timeUnit.toDays( 1 ));
20          System.out.println(timeUnit.toHours( 1 ));
21          System.out.println(timeUnit.toMinutes( 1 ));
22          System.out.println(timeUnit.toMicros( 1 ));
23          System.out.println(timeUnit.toMillis( 1 ));
24          System.out.println(timeUnit.toNanos( 1 ));
25          System.out.println(timeUnit.toSeconds( 1 ));
26          System.out.println( " 1天有 " + (timeUnit.convert( 1 , TimeUnit.DAYS)) + timeUnit.name());
27          System.out.println( " 12小时 " + (timeUnit.convert( 12 , TimeUnit.HOURS)) + timeUnit.name());
28          System.out.println( " 3600秒有 " + (timeUnit.convert( 36000 , TimeUnit.MINUTES)) + timeUnit.name());
29          System.out.println( " ------------------- " );
30      }
31  }
32 

－－－－－－－－－－－－－－－－－－－－－－－－－－
DAYS
1
24
1440
86400000000
86400000
86400000000000
86400
1天有1DAYS
24小时0DAYS
3600秒有25DAYS
-------------------
HOURS
0
1
60
3600000000
3600000
3600000000000
3600
1天有24HOURS
24小时12HOURS
3600秒有600HOURS
-------------------
MINUTES
0
0
1
60000000
60000
60000000000
60
1天有1440MINUTES
24小时720MINUTES
3600秒有36000MINUTES
-------------------
SECONDS
0
0
0
1000000
1000
1000000000
1
1天有86400SECONDS
24小时43200SECONDS
3600秒有2160000SECONDS
-------------------