In Java, \'
denotes a single quotation mark (single quote) character, and \"
denotes a double quotation mark (double quote) character.
So, String s = "I\'m a human.";
works well.
However, String s = "I'm a human."
does not make any compile errors, either.
Likewise, char c = '\"';
works, but char c = '"';
also works.
In Java, which is better to use? In HTML or CSS, things like style="font-family:'Arial Unicode MS';"
are more often (and for such tags, I think it's the only way to use quotation marks), but in Java, I usually saw people use escape characters like "I\'m a human."
You don't need to escape the '
character in a String (wrapped in "
), and you don't have to escape a "
character in a char (wrapped in '
).