Can you compare chars with ==?
126
How do I compare strings in Java?
132179
Is  && statement() the same as if() statement()?
82011
Check a string to see if all characters are hexadecimal values
124507
String Comparison in Java
17652
Compare two strings by ignoring certain characters
113187
Comparing Java enum members: == or equals()?
10610
How can I check if a single character appears in a string?
32886
What is the difference between != and =! in Java?
144910
Inadvertent use of = instead of ==
73430
C# .Equals(), .ReferenceEquals() and == operator
132543
Can I use chained comparison operator syntax?
109567
How does operator  work when comparing two strings?
145046
comparing float/double values using == operator
10298
Difference between == and === in JavaScript
74217
What is the "equals greater than" operator => in Ruby?
56072
How do I compare two string variables in an 'if' statement in Bash?
93360
Performance differences between equal (=) and IN with one literal value