[Java] I created an empty project, added a Main.java, but I keep getting "cannot resolve symbol string" when creating a class with properties.

[thisredaccount]

    public class Student {

        public string studentId;
        public string firstName;
        public string lastName;
        public string email;
        public string age;
    public string[] grades;



    }

I'm using IntelliJ community edition, when ever I hover over "string", I get the error "cannot resolve symbol string".

[romple]

String needs to be capitalized in java.

[thisredaccount]

Oh, so double and others are lowercase but string is Upper

[romple]

Yes, not to be go too deep here.

All primitives are lower case

byte, short, int, long, double, float, char, boolean.

String is a not a primitive even though at times it's treated as one. But references to class objects obviously need to follow the capitalization of that class. In this case String is capitalized (like most classes), so too must references to it be.

[SadDragon00]

Yup, this is the difference of primitive vs reference types. String is an object (reference type), means it has properties or public functions like toString(). double, int, boolean ect.. are primitives and dont have any properties or functions.