Question

Hello, I'm trying to write a simple java program that will convert letter grade to number. It should ask user to input letter and then a popup window will come up and tell them the number value for that particular letter. If user adds + or - it should decrease value by .3. I think I need to use if then statements but this is what I have so far...

Answer 1

import java.util.Scanner;
import javax.swing.*;
/**
* Auto Generated Java Class.
*/
public class TranslateGrade {

public static final int A = 4;

public static void main(String[] args) {

String input = JOptionPane.showInputDialog("Enter a letter grade:");
String grade=input;

JOptionPane.showMessageDialog(null, grade);





System.exit(0);
}


}

Answer 2

That will not work because the output will display a string and not numeric value so I'm kinda stuck right now and trying to figure out how to apply if or else statements to this.

Answer 3

i find it annoying when they teach you how to use GUI before knowing the basics.

You need a converter to say what each "letter" = in a number form.

Answer 4

I got this to work but I just found out that I need to create a class named Grade with a method getNumericGrade. . TranslateGrade program should test the Grade class.


import java.util.Scanner;
import javax.swing.*;

public class TranslateGrade2{


public static void main(String[] args) {


int numberGrade;
char letterGrade;



String x = JOptionPane.showInputDialog("Enter a letter grade:");
letterGrade = x.charAt(0);




if(letterGrade == 'A' )
{
JOptionPane.showMessageDialog(null, "4");
}



else if (letterGrade == 'B')
{
JOptionPane.showMessageDialog(null, "3");
}
else if (letterGrade == 'C')
{
JOptionPane.showMessageDialog(null, "2");
}
else if (letterGrade == 'D')
{
JOptionPane.showMessageDialog(null, "1");
}


}

}

Answer 5

Got it!