Reading a file and creating objects from the information [closed]

Question

Closed. This question needs to be more focused. It is not currently accepting answers.

---

Want to improve this question? Update the question so it focuses on one problem only by editing this post.

Closed 8 years ago.

Improve this question

I have two files and I want to individually read them then use the the first file to create 5 objects and then use the second file to add the parameters to be passed to a constructor, question is is I am not quite sure how to do that.

What I wanted to do was to loop the hasNextLine and assign the next line to a string and have an object created from that string name, then passing variables in the same way but I see that may not be possible in Java. If it isn't what is another way I could approach this?

Well I was trying to do something like this

   while(salesPersonScanner.hasNextLine()){
   String personName = salesPersonScanner.nextLine();
    SalesPerson personName = new SalesPerson();

    }

Answer 1

You can use a BufferedReader to iterate over lines:

final BufferedReader reader = new BufferedReader(new FileReader("/path/to/file"));

String line;
while ((line = reader.readLine()) != null) {
    // Create your object from the string
}

Answer 2

You have two options:

1. You can read all of the required parameters from files and then pass them all to the constructor to create a new object.

2. You can create an object with your constructor and use setters to set each of the instance variables.

I personally suggest the first approach unless you have to set lots of variables.