Several uses of Java timers

2. Package com.lid;
6. Import Java.util.Calendar;
8. Import Java.util.Date;
10. Import Java.util.Timer;
12. Import Java.util.TimerTask;
16. Public class Test {
18. public static void Main (string[] args) {
20. //timer1 ();
22. Timer2 ();
24. //timer3 ();
26. //timer4 ();
28. }
32. ///The first method: sets the specified task to execute the schedule (timertask task, Date time) at the specified times
34. public static void Timer1 () {
36. Timer timer = new timer ();
38. Timer.schedule (new TimerTask () {
40. public Void Run () {
42. System.out.println ("-------set to specify task--------");
44. }
46. }, 2000); //Set the specified time, 2000 milliseconds
48. }
52. ///The second method: sets the execution of a fixed delay peroid for a specified task after a specified delayed delay
54. //Schedule (timertask task, long delay, long period)
56. public static void Timer2 () {
58. Timer timer = new timer ();
60. Timer.schedule (new TimerTask () {
62. public Void Run () {
64. System.out.println ("-------set to specify task--------");
66. }
68. }, + , 1000);
70. }
74. ///Third method: Sets the execution of a fixed frequency peroid for the specified task tasks after the specified delayed delay.
76. //Scheduleatfixedrate (timertask task, long delay, long period)
78. public static void Timer3 () {
80. Timer timer = new timer ();
82. Timer.scheduleatfixedrate (new TimerTask () {
84. public Void Run () {
86. System.out.println ("-------set to specify task--------");
88. }
90. }, + , 2000);
92. }
96. //Fourth method: Schedule the specified task to execute at a fixed rate period the specified time Firsttime begins to repeat.
98. //Timer.scheduleatfixedrate (TimerTask task,date firsttime,long period)
100. public static void Timer4 () {
102. Calendar calendar = Calendar.getinstance ();
104. Calendar.set (Calendar.hour_of_day, 12); //Control time
106. Calendar.set (Calendar.minute, 0); //Control points
108. Calendar.set (Calendar.second, 0); //control seconds
112. Date time = Calendar.gettime (); //arrive at the time of the execution of the task, here is today's 12:00:00
116. Timer timer = new timer ();
118. Timer.scheduleatfixedrate (new TimerTask () {
120. public Void Run () {
122. System.out.println ("-------set to specify task--------");
124. }
126. }, time, + * ( ); This setting will delay the execution of the daily fixed
128. }
130. }

Several uses of Java timers