1+ package Multithreading ;
2+ 3+ import java .util .Random ;
4+ 5+ /**
6+ * Multithreading4
7+ */
8+ class PrintTask extends Thread {
9+ 10+ 11+ public void run ()
12+ {
13+ Random generator =new Random ();
14+ 15+ int sleeptime =generator .nextInt (5000 );
16+ 17+ try {
18+ System .out .printf ("%s is going to sleep for %d milliseconds\n " ,Thread .currentThread ().getName (),sleeptime );
19+ Thread .sleep (sleeptime );
20+ 21+ } catch (InterruptedException e ) {
22+ e .printStackTrace ();
23+ }
24+ System .out .println (Thread .currentThread ().getName ()+" state after .sleep is called:" +Thread .currentThread ().getState ());
25+ 26+ System .out .println (Thread .currentThread ().getName ()+" done sleeping" );
27+ }
28+ }
29+ /**
30+ * Multithreading4
31+ */
32+ public class Multithreading4 {
33+ 34+ public static void main (String [] args ) {
35+ PrintTask t1 =new PrintTask ();
36+ System .out .println ("State of " +t1 .getName ()+" after creating it:" +t1 .getState ());
37+ 38+ PrintTask t2 =new PrintTask ();
39+ System .out .println ("State of " +t2 .getName ()+" after creating it:" +t2 .getState ());
40+ 41+ PrintTask t3 =new PrintTask ();
42+ System .out .println ("State of " +t3 .getName ()+" after creating it:" +t3 .getState ());
43+ 44+ t1 .start ();
45+ System .out .println ("State of " + t1 .getName () + " after .start is called :" + t1 .getState ());
46+ try {
47+ System .out .println ("Current Thread: " + Thread .currentThread ().getName ());
48+ t1 .join ();
49+ System .out .println (t1 .getName ()+" After .join is called " +t1 .getState ());
50+ }
51+ 52+ catch (Exception ex ) {
53+ System .out .println ("Exception has " + "been caught" + ex );
54+ }
55+ t2 .start ();
56+ System .out .println ("State of " + t2 .getName () + " after .start is called :" + t2 .getState ());
57+ try {
58+ System .out .println ("Current Thread: " + Thread .currentThread ().getName ());
59+ t2 .join ();
60+ System .out .println (t2 .getName () + " After .join is called " + t2 .getState ());
61+ }
62+ 63+ catch (Exception ex ) {
64+ System .out .println ("Exception has " + "been caught" + ex );
65+ }
66+ t3 .start ();
67+ System .out .println ("State of " + t3 .getName () + " after .start is called :" + t3 .getState ());
68+ 69+ }
70+ }
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