IfElseIF.D3

package lessons;
import javax.swing.JOptionPane;
public class IfElseIf
{

    public static void main(String[] args)
    {
        //program asks user numeric test score and displays letter
        //90-100=A
        //80-89=B
        //70-79=C
        //60-69=D
        //0-59=F
        String s;
        int grade;

        s = JOptionPane.showInputDialog("whats ur test score?");
        grade = Integer.parseInt(s);

        if (grade < 59 )
        {
            JOptionPane.showMessageDialog(null,"your grade is: F");
        }
        else if(grade < 69)
        {
            JOptionPane.showMessageDialog(null,"your grade is: D");
        }
        else if(grade < 79)
        {
            JOptionPane.showMessageDialog(null,"your grade is: C");
        }
        else if(grade < 89)
        {
                JOptionPane.showMessageDialog(null,"your grade is: B");
        }
        else if (grade < 100)
        {
            JOptionPane.showMessageDialog(null,"your grade is: A");
        }
        else
        {
            JOptionPane.showMessageDialog(null,"invalid score");
        }
System.exit(0);
    }

}