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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.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		// your code goes here
  13. 		String a = "hello" + " world!";
  14. 		String b = "hello world!";
  15. 		boolean compare = (a == b); // This return true
  16. 		System.out.println(compare);
  17. 		a = "hello";
  18. 		b = "hel" + "lo";
  19. 		compare = (a == b); // This return false
  20. 		System.out.println(compare);
  21. 		a = "Bye";
  22. 		a += " bye!";
  23. 		b = "Bye bye!";
  24. 		compare = (a == b); // This return false
  25. 		System.out.println(compare);
  26. 		a = "Bye bye!";
  27. 		b = "Bye";
  28. 		b += " bye!";
  29. 		compare = (a == b); // This return false
  30. 		System.out.println(compare);
  31. 	}
  32. }
Success #stdin #stdout 0.05s 4386816KB
comments (?)
stdin 
Standard input is empty
stdout 
true
true
false
false
https://ideone.com/fdk6KL
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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