Every Child Is A Special Movie Free Downloadl

by eanrsmo | 0 Comments | 14 Jan 2023

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Why am I getting NullPointerException error when I click on a button

I am trying to write a program that can add and delete a student but the add and delete buttons do not have any visibility at all and the message cannot be deleted. Any help would be appreciated.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Scanner;

public class S1231n extends JFrame
{
public S1231n()
{

JFrame frame = new JFrame(“Simple Student and Classes”);
frame.setVisible(true);
frame.setSize(500,500);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel userNameLabel = new JLabel(“Enter your name”);
JTextField userName = new JTextField(20);
JLabel passWordLabel = new JLabel(“Enter your password”);
JPasswordField passWord = new JPasswordField(20);
JLabel dateOfBirthLabel = new JLabel(“Enter your date of birth”);
JTextField dob = new JTextField(20);

JLabel name = new JLabel(“Student Name:”);
JTextField student = new JTextField(20);
JLabel pass = new JLabel(“Password:”);
JPasswordField pass2 = new JPasswordField(20);
JLabel max = new JLabel(“Max Score:”);
JTextField score = new JTextField(20);
JLabel course = new JLabel(“Course:”);
JTextField courseText = new JTextField(20);
JLabel lecturer = new JLabel(“Lecturer:”);
JTextField lect = new JTextField(20);

JButton add = new JButton(“Add Student”);

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Every Child Is A Special Movie Free Downloadl

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