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  1. /* package whatever; // don't place package name! */
  2.  
  3. public class Main {
  4.  
  5.     private static Thread criarThread(final int numero) {
  6.         return new Thread(new Runnable() {
  7.             @Override
  8.             public void run() {
  9.                 try {
  10.                     System.out.println("t" + numero + " começou");
  11.                     Thread.sleep((int) (Math.random() * 10000));
  12.                     System.out.println("t" + numero + " terminou");
  13.                 } catch (InterruptedException e) {
  14.                     // Ignora...
  15.                 }
  16.             }
  17.         });
  18.     }
  19.  
  20. 	public static void main(String[] args) {
  21.         Thread[] ts = {
  22.             criarThread(1),
  23.             criarThread(2),
  24.             criarThread(3),
  25.             criarThread(4),
  26.             criarThread(5)
  27.         };
  28.         for (Thread t : ts) {
  29.             t.start();
  30.         }
  31.  
  32.         new Thread(new Runnable() {
  33.             @Override
  34.             public void run() {
  35.                 for (Thread t : ts) {
  36.                     try {
  37.                         t.join();
  38.                     } catch (InterruptedException e) {
  39.                 // Ignora...
  40.                     }
  41.                 }
  42.                 System.out.println("Todas as threads terminaram");
  43.             }
  44.         }).start();
  45.         System.out.println("A main está livre");
  46. 	}
  47. }
Success #stdin #stdout 0.1s 322432KB
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stdin
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Standard input is empty
stdout
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t1 começou
t2 começou
t3 começou
t4 começou
t5 começou
A main está livre
t3 terminou
t5 terminou
t1 terminou
t4 terminou
t2 terminou
Todas as threads terminaram
https://ideone.com/DDVOrG
language:
Java (12.0.1)
created:
8 years ago
visibility:
public

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