The difference between single and double quotes and string and char in Java

The difference between single and double quotes and string and char in Java The data for single quotation marks is of type char.
The data for double quotation marks is of type string
Single quotes can only quote one character
and double quotes can lead to 0 and above

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Char is defined with single quotes, only one letter, number. Char c= ' C ';
string with double quotation marks, can be one, may be more than one letter, kanji and so on. is called a string. String s= "Adsaf";
Char is just a basic type, and string is a class that can be referenced directly.
such as Char c= ' C '; The method cannot be called directly on C.
String s= "ABC"; You can call S.charat (0), and so on, because string is the class, and that is the object's call.

The difference between single and double quotes and string and char in Java