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I just found something very interesting which was introduced by my typo. Here's a sample of very easy code script:
printf("A" "B");
The result would be
$> AB
Can someone explain how this happens?
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There are two ways to concatenate strings in Java: By + (String concatenation) operator. By concat() method.
Concatenation is the process of appending one string to the end of another string. You concatenate strings by using the + operator. For string literals and string constants, concatenation occurs at compile time; no run-time concatenation occurs. For string variables, concatenation occurs only at run time.
The '+' operator adds the two input strings and returns a new string that contains the concatenated string.
The best way to describe it is when you take two separate strings – stored by the interpreter – and merge them so that they become one. For instance, one string would be “hello” and the other would be “world.” When you use concatenation to combine them it becomes one string, or “hello world”.
As a part of the C standard, string literals that are next to one another are concatenated:
For C (quoting C99, but C11 has something similar in 6.4.5p5):
(C99, 6.4.5p5) "In translation phase 6, the multibyte character sequences specified by any sequence of adjacent character and identically-prefixed string literal tokens are concatenated into a single multibyte character sequence."
C++ has a similar standard.
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