я проблема сJFrame не показываяJTable это добавлено к этому. я пробовалgetContentPane().add(..)Я переключился на просто добавить, чтобы сохранить код немного короче. Любая помощь более чем ценится!

package com.embah.Accgui;

import java.awt.*;
import javax.swing.*;

public class accCreator extends JFrame {
private String[] columnNames = {"Username", "Password", "Members", "World"};
private Object[][] data = {{"b", "b", "b", "b"},
                          { "e", "e", "e", "e"}};
    private JTable tbl_Accounts;
    private JScrollPane scrollPane;
    private JLabel lbl_Account = new JLabel();
    private JLabel lbl_Username = new JLabel();
    private JLabel lbl_Password = new JLabel();
    private JLabel lbl_Homeworld = new JLabel();
    private JButton btn_Select = new JButton();
    private JButton btn_Addacc = new JButton();
    private JButton btn_Delacc = new JButton();
    private JTextArea txt_Username = new JTextArea();
    private JTextArea txt_Password = new JTextArea();
    private JTextArea txt_Homeworld = new JTextArea();
    private JCheckBox cbox_Members = new JCheckBox();
    private JCheckBox cbox_RanWrld = new JCheckBox();


public accCreator() {
    setLayout(null);
    setupGUI();
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

void setupGUI() {
    tbl_Accounts = new JTable(data, columnNames);
    tbl_Accounts.setLocation(5, 30);
    tbl_Accounts.setPreferredScrollableViewportSize(new Dimension(420, 250));
    tbl_Accounts.setFillsViewportHeight(true);
    tbl_Accounts.setVisible(true);
    add(tbl_Accounts);
    scrollPane = new JScrollPane(tbl_Accounts);
    add(scrollPane);

    lbl_Account.setLocation(4, 5);
    lbl_Account.setSize(100, 20);
    lbl_Account.setText("Select Account:");
    add(lbl_Account);

    lbl_Username.setLocation(5, 285);
    lbl_Username.setSize(70, 20);
    lbl_Username.setText("Username:");
    add(lbl_Username);

    lbl_Password.setLocation(5, 310);
    lbl_Password.setSize(70, 20);
    lbl_Password.setText("Password:");
    add(lbl_Password);

    lbl_Homeworld.setLocation(310, 310);
    lbl_Homeworld.setSize(80, 20);
    lbl_Homeworld.setText("Home World:");
    add(lbl_Homeworld);

    btn_Select.setLocation(305, 5);
    btn_Select.setSize(120, 20);
    btn_Select.setText("Select Account");
    add(btn_Select);

    btn_Addacc.setLocation(300, 285);
    btn_Addacc.setSize(60, 20);
    btn_Addacc.setText("Add");
    btn_Addacc.addActionListener(new ActionListener(){
        @Override
        public void actionPerformed(ActionEvent arg0) {
            String worldSel = "";
            if(cbox_RanWrld.isSelected()){
                worldSel = "Random";
            } else {
                worldSel = txt_Homeworld.getText();
            }
            Object[] row = {txt_Username.getText(), txt_Password.getText(), cbox_Members.isSelected(), worldSel};
            DefaultTableModel model = (DefaultTableModel) tbl_Accounts.getModel();
            model.addRow(row);
        }
    });
    add(btn_Addacc);

    btn_Delacc.setLocation(365, 285);
    btn_Delacc.setSize(60, 20);
    btn_Delacc.setText("Del");
    btn_Delacc.addActionListener(new ActionListener(){
        @Override
        public void actionPerformed(ActionEvent arg0) {
            DefaultTableModel model = (DefaultTableModel) tbl_Accounts.getModel();

        }
    });
    add(btn_Delacc);

    txt_Username.setLocation(80, 285);
    txt_Username.setSize(100, 20);
    txt_Username.setText("");
    txt_Username.setRows(5);
    txt_Username.setColumns(5);
    add(txt_Username);

    txt_Password.setLocation(80, 310);
    txt_Password.setSize(100, 20);
    txt_Password.setText("");
    txt_Password.setRows(5);
    txt_Password.setColumns(5);
    txt_Password.setTabSize(0);
    add(txt_Password);

    txt_Homeworld.setLocation(395, 310);
    txt_Homeworld.setSize(30, 20);
    txt_Homeworld.setText("82");
    txt_Homeworld.setRows(5);
    txt_Homeworld.setColumns(5);
    txt_Homeworld.setTabSize(0);
    add(txt_Homeworld);

    cbox_Members.setLocation(185, 285);
    cbox_Members.setSize(80, 20);
    cbox_Members.setText("Members");
    cbox_Members.setSelected(false);
    add(cbox_Members);

    cbox_RanWrld.setLocation(185, 310);
    cbox_RanWrld.setSize(115, 20);
    cbox_RanWrld.setText("Random World");
    cbox_RanWrld.setSelected(false);
    add(cbox_RanWrld);

    setTitle("Account Manager");
    setSize(440, 370);
    setVisible(true);
    setResizable(false);

}

public static void main(String args[]) {
    new accCreator();
}
}