Checking input type...how?
<p>I have the following method:</p>

<pre><code>public void addStudent(){

    String fName, lName;
    double mGrade, fGrade;
    System.out.print("\nEnter first name: ");
    Scanner in = new Scanner(System.in);
    fName = in.nextLine();
    System.out.print("\nEnter last name: ");
    lName = in.nextLine();
    System.out.print("\nEnter midterm grade: ");
    mGrade = in.nextDouble();
    System.out.print("\nEnter final grade: ");
    fGrade = in.nextDouble();
    Student toAdd = new Student(fName, lName, mGrade, fGrade);
    students.add(toAdd);
    System.out.println("\nStudent record added.\n");
    System.out.println(students.size());
}
</code></pre>

<p>How can I check if the user typed in something other than an integer for midterm grade and final grade? And if they entered a non-integer,  I want the method to just request the user type in that value again. I'm guessing I'll have to use a do-while loop. But I don't don't know how to check the type...</p>

<p>Thanks!</p>
