Please Help Me With While Loop & Cancel

[LuK2007]

Hey all, I would be delighted if someone could help me complete my coding,
im trying to make it able for the user to type in as many percentages and
display the coding for the grade as many times as they like using a WHILE
LOOP and making the LOOP end when the user hits cancel! I got most of the coding just need a small snippet to get it fully function - any help will be GREATLY appreciated

//here is so far:
 
import javax.swing.JOptionPane;
 
public class StudentGradesWeek7
{
    public static void main(String[] args)
    {
        String input = JOptionPane.showInputDialog("Enter The Student's Mark As A Percentage:");
 
        int inputMark = Integer.parseInt(input);
 
        char g = getGrade(inputMark);
 
        JOptionPane.showMessageDialog(null, "The Student's Grade Is " + g);
    }
 
    private static char getGrade(int mark)
    {
        char grade;
 
        if (mark >= 70)
        {
            grade = 'A';
        }
        else if (mark >= 60)
        {
            grade = 'B';
        }
        else if (mark >= 50)
        {
            grade = 'C';
        }
        else if (mark >= 40)
        {
            grade = 'D';
        }
        else
        {
            grade = 'F';
        }
        return grade;
    }
}
 

[r035198x]

Where is the while loop that you were talking about?

[LuK2007]

Thats the bit i need the while loop and the cancel part i really dont know where to put it - but i do know how to do while loops

[JosAH]

Note that the showInputDialog(...) method returns null when the user has
canceled the menu; it's an excellent candidate for a while conditional expression:

while ((yourString= JOptionPane.showInputDialog( ... )) != null) {
   // process the value of yourString
}
 

kind regards,

Jos