Error: Error: the unclosed character literal value that has not ended

String variables using single quotes, double quotes, very low error.
The difference between char and String in Java
1. Char represents characters, defined with single quotes, and can store only one character, e.g. Char c=’x’;
A String is a String, defined in double quotes, that can store one or more characters, such as String name=” Tom “;

2. Char is the basic data type, while String is a class with object-oriented characteristics that can call methods such as name.length() to get the length of the String.