Creating a arraylist from a class - java

Question

I've created a class called Student which will contain information about students.

public class Student {
    private int totalPoint;
    private int antalKurser;
    private String program;

// here is constructor and get/set methods
}

I'm also trying to create a ArrayList from that class and from what I understand i should write:

public class createArrayList {
        ArrayList<Student> studentList new ArrayList<>();
}

However Netbeans gives me an error and if I hover the line it says ';' expexted but I'm positive I have written that (above snippet is copy-pasted). When I run the code it says "compiled with errors" but still runs.

Found somewhere else I also could write:

ArrayList<Class> studentList = new ArrayList<>();

But then how does the application know which class it should create a list from?

The class Student is in another javafile but is in the same package. What am I missing?

Where's the =? You really need to learn the basic syntax. You can't just copy-paste code without understanding what you're doing. — Kayaman
– Kayaman, Commented Nov 15, 2017 at 20:13
ArrayList<Student> studentList = new ArrayList<>(); you need the = — azro
– azro, Commented Nov 15, 2017 at 20:13
In java 8 you don't need to add the class ArrayList<Student> studentList = new ArrayList<>(); If you use java 7 though you need to do ArrayList<Student> studentList = new ArrayList<Student>(); — Alex P.
– Alex P., Commented Nov 15, 2017 at 20:16
Oh my, that was a silly mistake. Looked through the code thousands of times, still missed it :). Thanks! — user5862095
– user5862095, Commented Nov 15, 2017 at 20:16
@Axel P. sorry, wrong, Java 6 needed the class in generics creation :-) — brummfondel
– brummfondel, Commented Nov 15, 2017 at 20:18

Josh Withee · Accepted Answer · 2017-11-15 20:15:16Z

1

Try

public class createArrayList {
        ArrayList<Student> studentList = new ArrayList<Student>();
}

answered Nov 15, 2017 at 20:15

Josh Withee

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1 Comment

user5862095 Over a year ago

Thanks! I missed the = even though I checked the code loads of times.

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