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  1. import java.util.*;
  2.  
  3. class Main {
  4. 	public static HashMap<String, String> lista = new HashMap<>();
  5.  
  6. 	private static void Put(String teste, String outra) {
  7. 	    for (int i = 0; i < 100000; i++) if (lista.containsKey("antonio")) lista.put(teste, outra);
  8. 	}
  9.  
  10. 	private static void Replace(String teste, String outra) {
  11. 	    for (int i = 0; i < 100000; i++) lista.replace(teste, outra);
  12. 	}
  13.  
  14. 	public static void main(String[] args) {
  15. 	    long inicio = System.currentTimeMillis();
  16. 	    Put("antonio", "antonio");
  17. 	    System.out.println("Put: " + (System.currentTimeMillis() - inicio)  + " ms");
  18. 	    inicio = System.currentTimeMillis();
  19. 	    Replace("antonio", "antonio");
  20. 	    System.out.println("Replace: " + (System.currentTimeMillis() - inicio) + " ms");
  21. 	}
  22. }
  23.  
  24. //https://pt.stackoverflow.com/q/319076/101
Success #stdin #stdout 0.12s 36712KB
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stdin
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Standard input is empty
stdout
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Put: 14 ms
Replace: 8 ms
https://ideone.com/d35WpV
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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