At String s1 = "str" + s.length(); the value of s1=str4 but it turns out to be false at next sysout statement during equality check
126
How do I compare strings in Java?
31433
How do I properly compare strings in C?
153856
String comparison and String interning in Java
128255
Empty Strings: Why or when is '' equal to ' '?
19121
How does the String class override the + operator?
33995
CharSequence VS String in Java?
63349
How to string-compare for a single space
109567
How does operator  work when comparing two strings?
82662
string = string + int: What's behind the scenes?
106258
What is the reason that an empty string evaluates to false in Javascript
120169
Expected identifier, string or number
1736
How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators differ?
92195
Why does isEqualToString not work for NSString?
11189
'is' operator behaves differently when comparing strings with spaces
55524
How to find out if the value contained in a string is double or not
94252
How to determine the result of assigning multi-character char constant to a char variable?
49396
Why can't Python's raw string literals end with a single backslash?