How do I read lines from a txt file and add each line to a type LinkedList?

Question

So basically the program calls to use a class type LinkedList to store lines from a text file. Course is a separate class I have so that is the type of LinkedList I'm using. Here is the txt file the program is reading from

CPSC141 Computer_Organization   3   D
CPSC130 Computer_ProgrammingI   3   B
Math140 Calculus_I  4   E
CPSC232 Assembler_Languages 3   B
CPSC131 Computer_ProgramingII 3 A
Math141 Calculus_II 4   B

Here is my code

File inFile = new File("courses.txt");
    Scanner f = new Scanner(inFile);
    while (f.hasNextLine())
    {
        Courses.add(f);
    }
    f.close();

The problem is I get an error message that says this

method.java.util.Collection.add(Course) is not applicable;
(argument mismatch; java.util.Scanner cannot be converted to Course);

I don't know how to convert the string from the txt file to type Course (my separate class)

Answer 1

在Java 8中，您可以简单地使用：

List<String> yourList = Files.readAllLines(Paths.get("courses.txt"));

Answer 2

f is a Scanner instance. Change it to the line that it read in following line.

//from
Courses.add(f);
//To
Courses.add(f.nextLine());

Answer 3

Right now the variable f is a Scanner instance. You can either convert it to a string with String.valueOf or toString() methods, or read the entire line as a string.