Cant find method? and i cant figure out how to round a decimal....

Question

when i compile this it says "getAverage not found in class AverageGradeUser" - look at actionPeformed() to find where its used at....how do i fix this, i had it working but somehow messed it up and when the new average is figured and put in the results textfield, how can u round it off to the nearest tenth (0.1)..ive tried using NumberFormat and related things but couldnt get it to work
please help me
thanks
p.s. keep in mind i am a rookie-rookie-rookie in java programming
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class AverageGradeUser extends Applet implements ActionListener
/****InstanceVariables****/
public TextField input;
/*****InitMethod****/
public void init()
Label directions = new Label("Enter a grade percent: ");
input = new TextField(10);
Label results = new Label("Your new average is: ");
TextField output = new TextField(10);
add(directions);
add(input);
add(results);
add(output);
output.setEditable(false);
input.addActionListener(this);
} // init()
public void actionPerformed(ActionEvent e)
double grade = Double.parseDouble(input.getText());
if (e.getSource() == input)
getAverage(grade);
} // actionPerformed()
} // AverageGradeUser class
============================================================
(the classes are in separate files but both are in the project)
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class AverageGrade
/****InstanceVariables****/
private double total = 0;
private double counter = 0;
private double average = 0;
private TextField input;
private TextField output;
/****ConstructorMethod****/
public AverageGrade()
/****AccessMethod****/
public void getAverage(double g)
total += g;
counter ++;
average = total / counter;
output.setText(average + " " + getLetterGrade(average));
input.setText("");
} // getAverage()
private String getLetterGrade(double avg)
if (avg >= 90)
return "A";
else if (avg >= 80)
return "B";
else if (avg >= 70)
return "C";
else if (avg >= 60)
return "D";
else if (avg < 60)
return "F";
else
return "error";
} // getLetterGrade()
} // AverageGrade class

Answer 1

According to the code you have posted, method "getAverage()" is defined in class "AverageGrade" -- and not in class "AverageGradeUser". Therefore, you have two choices (in my opinion):
1. Add the definition of method "getAverage()" to class "AverageGradeUser"
2. Change the "actionPerformed()" method:
Replace the line:
getAverage(grade)with
new AverageGrade().getAverage(grade)Hope this helps you.
Good Luck,
Avi.