Error on Calling Methods Using an Object of a Class

Question

I keep getting the error cannot resolve variable addStud . I can't figure out why. I've created objects of classes before this way, then called methods within that class like this and it worked fine. I can't discern any difference between the syntax of the program that worked successfully and this one. I commented the parts where the error is when I tried to send a variable to a method in the class Recieve of which addStud is an object of. If you can see something that I can't I'd appreciate it. I've checked the obvious things like making sure the class name and method name is spelled the same way in both my frame and the class file.
import java.awt.event.*;
import java.awt.*;     /* Used by IntroTest3.java. */
import javax.swing.*;
public class RegFrame extends JInternalFrame
{   // Begin class RegFrame
static final int xOffset = 30, yOffset = 30;
     private JLabel nameLabel, displayLabel;  
     private JTextField nameField;
     private JTextArea displayText;
     private JButton addButton;
     private String name;
     private int numStu;
public RegFrame() {     // Begin RegFrame constructor  
              super(" Register a New Student ",
              true, //resizable
              true, //closable
              true, //maximizable
              true);//iconifiable
        //...Create the GUI and put it in the window...
        //...Then set the window size or call pack...
        setSize(400,300);        //Set the window's location.
        setLocation(xOffset, yOffset);
        Container content = getContentPane();
        setBackground(Color.white);
        content.setBackground(Color.white);
        content.setLayout( new FlowLayout());
  //*   CREATE LABELS AND TEST ENTRY FIELDS FOR REGISTERING A NEW STUDENT       *
        *  HERE IS WHERE OBJECT OF RECIEVE IS CREATED *
     Recieve addStud = new Recieve();
     nameLabel = new JLabel(" Enter student name: ");
     nameField = new JTextField(20);
     content.add ( nameLabel );
     content.add ( nameField );
     addButton = new JButton( "Add Student" );
     content.add( addButton );
     addButton.addActionListener(
          new ActionListener()
     { // Open ActionListener
          public void actionPerformed (ActionEvent e)
               getInput();
     } // Close ActionListener
    }   // End RegFrame Constructor
// get input
    private void getInput()
          numStu++;
          name = nameField.getText();
          JOptionPane.showMessageDialog( null, "NAME: "  + name + "\n"
                + "Student number:"+ numStu );
                addStud.addName( name );   /** <--- HERE IS ERROR **/
} // End class RegFrame;This is the class:
public class Recieve
{ // Begin class Recieve
    private double stAssign[];
    private double stLab[];   
    private double stProject[];
    private double stQuiz[];
    private double stTest[];
    private String stNames[];       
    int snc;  
public Recieve ()
        stAssign = new double[10];
        stLab = new double[10];
        stProject = new double[10];
        stQuiz = new double[10];
        stTest = new double[10];
        stNames = new String[10];
        snc = 0;    // Student Name Counter      
public void addName (String stName)
        stNames[snc] = stName;
        snc++;
} // End class Recieve

Answer 1

1- Add the following class variable declaration for RegFrame:
private Recieve addStud;2- Change in the RegFrame constructor:
addStud = new Recieve();