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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.util.concurrent.CompletableFuture;
  7. import java.lang.Thread;
  8.  
  9. /* Name of the class has to be "Main" only if the class is public. */
  10. class Ideone
  11. {
  12. 	public static void main (String[] args) throws java.lang.Exception
  13. 	{
  14. 	    CompletableFuture<Void> s = new CompletableFuture();
  15. 	    CompletableFuture<Void> f = new CompletableFuture();
  16.  
  17. 	    CompletableFuture<Void> someContext =  CompletableFuture.supplyAsync(() ->
  18. 	    {
  19. 	    	try{
  20.  
  21.  
  22. 			System.out.println(Thread.currentThread().getId());
  23. 		    CompletableFuture<String> update =
  24. 	        CompletableFuture.supplyAsync(
  25. 	            () -> {
  26. 	              String ans = null;
  27. 	              try {
  28. 	                System.out.println(Thread.currentThread().getId());
  29. 	                ans = "Hello";
  30. 	              } catch (Exception e) {
  31. 	                ans = e.toString();
  32. 	              } finally {
  33. 	              	s.complete(null);
  34. 	              	return ans;
  35. 	              }
  36. 	            });
  37. 		    s.get();
  38. 		    System.out.println(s.isDone());
  39. 	    	} catch (Exception e) {
  40. 	    		System.out.println("Some error");
  41. 	    		return null;
  42. 	    	}
  43. 		    return null;
  44. 	    });
  45.  
  46. 	    System.out.println(f.isDone());
  47. 	}
  48. }
Success #stdin #stdout 0.1s 52144KB
comments (?)
stdin 
Standard input is empty
stdout 
false
10
12
true
https://ideone.com/jEirDX
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
public

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