Java - ¿Cómo cargar datos de un JFrame a un Jtable de otro JFrame?

package my.org;

import java.awt.Dimension;

import java.awt.HeadlessException;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.ArrayList;

import java.util.List;

import java.util.function.Consumer;

import javax.swing.BoxLayout;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JTable;

import javax.swing.JTextField;

import javax.swing.table.AbstractTableModel;

public class App extends JFrame {

	private JTable table;

	private DataTable dataTable = new DataTable();

	private JButton createClientBtn = new JButton("Create client");

	private JButton editClientBtn = new JButton("Edit client");

	private JFrame editWindow;

	private SomeData editData;

	private static class SomeData implements Cloneable {

		static String[] COLUMNS = { "name", "surname" };

		static int COLUMNS_COUNT = 2;

		private String name;

		private String surname;

		String getValueAt(int c) {

			return (c == 0) ? name : surname;

		}

		@Override

		protected Object clone() throws CloneNotSupportedException {

			return super.clone();

		}

	}

	private List<SomeData> dataList = new ArrayList<>();

	public App() throws HeadlessException {

		JPanel mainPanel = new JPanel();

		mainPanel.setPreferredSize(new Dimension(300, 300));

		mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));

		table = new JTable(dataTable);

		table.setPreferredScrollableViewportSize(new Dimension(300, 200));

		mainPanel.add(table);

		mainPanel.add(createClientBtn);

		mainPanel.add(editClientBtn);

		add(mainPanel);

		createClientBtn.addActionListener(new ActionListener() {

			@Override

			public void actionPerformed(ActionEvent e) {

				editData = new SomeData();

				editWindow = new EditWindow(editData, data -> {

					dataList.add(data);

					dataTable.fireTableDataChanged();

				});

				showWin(editWindow);

			}

		});

		editClientBtn.addActionListener(new ActionListener() {

			@Override

			public void actionPerformed(ActionEvent e) {

				int selectedRow = table.getSelectedRow();

				if (selectedRow == -1)

					return;

				editData = dataList.get(selectedRow);

				editWindow = new EditWindow(editData, data -> {

					dataTable.fireTableDataChanged();

				});

				showWin(editWindow);

			}

		});

	}

	public static void main(String[] args) {

		JFrame win = new App();

		showWin(win);

	}

	private static void showWin(JFrame win) {

		win.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		win.pack();

		win.setVisible(true);

	}

	private class DataTable extends AbstractTableModel {

		@Override

		public String getColumnName(int c) {

			return SomeData.COLUMNS[c];

		}

		@Override

		public int getRowCount() {

			return dataList.size();

		}

		@Override

		public int getColumnCount() {

			return SomeData.COLUMNS_COUNT;

		}

		@Override

		public Object getValueAt(int r, int c) {

			return dataList.get(r).getValueAt(c);

		}

	}

	private static class EditWindow extends JFrame {

		private JButton saveBtn = new JButton("Save");

		private JButton cancelBntn = new JButton("Cancel");

		private SomeData data;

		private JTextField nameTxt;

		private JTextField surnameTxt;

		private final SomeData backupData;

		public SomeData getData() {

			return data;

		}

		public EditWindow(final SomeData someData, final Consumer<SomeData> onSaveCallback) throws HeadlessException {

			super();

			JPanel mainPanel = new JPanel();

			mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));

			mainPanel.setPreferredSize(new Dimension(100, 200));

			this.backupData = someData;

			this.data = someData;

			nameTxt = new JTextField(data.name);

			surnameTxt = new JTextField(data.surname);

			mainPanel.add(nameTxt);

			mainPanel.add(surnameTxt);

			mainPanel.add(saveBtn);

			mainPanel.add(cancelBntn);

			add(mainPanel);

			saveBtn.addActionListener(new ActionListener() {

				@Override

				public void actionPerformed(ActionEvent e) {

					data.name = nameTxt.getText();

					data.surname = surnameTxt.getText();

					onSaveCallback.accept(data);

					setVisible(false);

					dispose();

				}

			});

			cancelBntn.addActionListener(new ActionListener() {

				@Override

				public void actionPerformed(ActionEvent e) {

					try {

						data = (SomeData) backupData.clone();

					} catch (CloneNotSupportedException e1) {

						e1.printStackTrace();

					}

					setVisible(false);

					dispose();

				}

			});

		}

	}

}