fork download
copy 
  1. import java.util.function.Supplier;
  2.  
  3. public enum Main {;
  4.  
  5. 	public static void main(String[] args) {}
  6.  
  7. 	public class Lazy<T> {
  8.  
  9. 	    private volatile boolean initialized = false;
  10.  
  11. 	    private T value;
  12.  
  13. 	    private final Supplier<T> supplier;
  14.  
  15. 	    public Lazy(Supplier<T> supplier) {
  16. 	        this.supplier = supplier;
  17. 	    }
  18.  
  19. 	    public T get() {
  20. 	        if (!initialized) {
  21. 	            synchronized (this) {
  22. 	                if (!initialized) {
  23. 	                    T localValue = supplier.get();
  24. 	                    value = localValue;
  25. 	                    initialized = true;
  26. 	                    return localValue;
  27. 	                }
  28. 	            }
  29. 	        }
  30. 	        return value;
  31. 	    }
  32.  
  33. 	}
  34.  
  35. }
Success #stdin #stdout 0.06s 32476KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/UrK9M7
language:
Java (12.0.1)
created:
3 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!