String.equals versus ==
126
How do I compare strings in Java?
78285
How to check for equals? (0 == i) or (i == 0)
149427
Comparing StringBuffer content with equals
13254
What is the difference between String and string in C#?
33574
Comparing a string with the empty string (Java)
148619
Is there a reason not to use  (null safe equals operator) in mysql instead of =?
27495
Why is True returned when checking if an empty string is in another?
109282
Java comparison with == of two strings is false?
23586
What is the difference between String.Empty and "" (empty string)?
3941
What's the difference between ".equals" and "=="?
154049
why does if("string") evaluate "string" as true but if ("string"==true) does not?
46562
Differences in string compare methods in C#
113187
Comparing Java enum members: == or equals()?
153856
String comparison and String interning in Java
62074
Which is more effective: if (null == variable) or if (variable == null)?
15097
Is there any difference between IS NULL and =NULL
73203
String-bool comparsion - why?