Create New Thread Using Runnable Example

1. /*
2. Create New Thread Using Runnable Example
3. This Java example shows how to create a new thread by implementing
4. Java Runnable interface.
5. */
6.  
7. /*
8.  * To create a thread using Runnable, a class must implement
9.  * Java Runnable interface.
10.  */
11. public class CreateThreadRunnableExample implements Runnable{
12.  
13. /*
14. * A class must implement run method to implement Runnable
15. * interface. Signature of the run method is,
16. *
17. * public void run()
18. *
19. * Code written inside run method will constite a new thread.
20. * New thread will end when run method returns.
21. */
22. public void run(){
23.  
24. for(int i=0; i < 5; i++){
25. System.out.println("Child Thread : " + i);
26.  
27. try{
28. Thread.sleep(50);
29. }
30. catch(InterruptedException ie){
31. System.out.println("Child thread interrupted! " + ie);
32. }
33. }
34.  
35. System.out.println("Child thread finished!");
36. }
37.  
38. public static void main(String[] args) {
39.  
40. /*
41. * To create new thread, use
42. * Thread(Runnable thread, String threadName)
43. * constructor.
44. *
45. */
46.  
47. Thread t = new Thread(new CreateThreadRunnableExample(), "My Thread");
48.  
49. /*
50. * To start a particular thread, use
51. * void start() method of Thread class.
52. *
53. * Please note that, after creation of a thread it will not start
54. * running until we call start method.
55. */
56.  
57. t.start();
58.  
59. for(int i=0; i < 5; i++){
60.  
61. System.out.println("Main thread : " + i);
62.  
63. try{
64. Thread.sleep(100);
65. }
66. catch(InterruptedException ie){
67. System.out.println("Child thread interrupted! " + ie);
68. }
69. }
70. System.out.println("Main thread finished!");
71. }
72. }
73.  
74. /*
75. Typical output of this thread example would be
76.  
77. Main thread : 0
78. Child Thread : 0
79. Child Thread : 1
80. Main thread : 1
81. Main thread : 2
82. Child Thread : 2
83. Child Thread : 3
84. Main thread : 3
85. Main thread : 4
86. Child Thread : 4
87. Child thread finished!
88. Main thread finished!
89.  
90. */