diff --git a/src/MainWindow.java b/src/MainWindow.java
new file mode 100644
index 0000000..0dec2d9
--- /dev/null
+++ b/src/MainWindow.java
@@ -0,0 +1,138 @@
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import javax.swing.DefaultListModel;
+import javax.swing.JButton;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JList;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JTextField;
+
+public class MainWindow extends JFrame {
+	
+	private static final long serialVersionUID = 1L;
+	private IList<String> elementList;
+	private JTextField txtInputField;
+	private JLabel lblShowText;
+	private JList<String> lstElementsList;
+	private JButton btnAddElement, btnRemoveElement, btnClearAllElements;
+	DefaultListModel<String> model;
+	
+	public MainWindow() {
+		this.setTitle("QueueWindow");
+		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		this.setSize(300, 208);
+		this.setLayout(new GridBagLayout());
+		GridBagConstraints c = new GridBagConstraints();
+		
+		/* Create the button listener
+		 * Either use one ButtonListener or use several different inner class listeners.
+		 * Example: btnAddElement.addActionListener(new AddElementListener); */
+		ButtonListener buttonListener = new ButtonListener();
+		
+		// Left panel
+		JPanel leftPanel = new JPanel(new GridBagLayout());
+		
+		// lblShowText
+		lblShowText = new JLabel();
+		lblShowText.setText(" "); // To save a place in the grid for the label when it updates.
+		c.gridx = 0;
+		c.gridy = 0;
+		c.fill = GridBagConstraints.HORIZONTAL;
+		c.anchor = GridBagConstraints.CENTER;
+		leftPanel.add(lblShowText, c);
+		
+		// txtInputField
+		txtInputField = new JTextField(10);
+		c.gridy++;
+		leftPanel.add(txtInputField, c);
+		
+		// btnAddElement
+		btnAddElement = new JButton("Add");
+		c.gridy++;
+		leftPanel.add(btnAddElement, c);
+		btnAddElement.addActionListener(buttonListener);
+		
+		// btnRemoveElement
+		btnRemoveElement = new JButton("Remove");
+		c.gridy++;
+		leftPanel.add(btnRemoveElement, c);
+		btnRemoveElement.addActionListener(buttonListener);
+
+		// btnClearAllElements
+		btnClearAllElements = new JButton("Clear");
+		c.gridy++;
+		leftPanel.add(btnClearAllElements, c);
+		btnClearAllElements.addActionListener(buttonListener);
+
+		// leftPanel
+		c.gridx = 0;
+		c.gridy = 0;
+		this.add(leftPanel, c);
+
+		// Right panel
+		// lstElementsList
+		lstElementsList = new JList<String>();
+		lstElementsList.setFixedCellWidth(150);
+		JScrollPane scrollPane = new JScrollPane();
+		scrollPane.setViewportView(lstElementsList);
+		c.gridx = 1;
+		c.gridy = 0;
+		c.fill = GridBagConstraints.BOTH;
+		this.add(scrollPane, c);
+		
+		elementList = new List<String>();
+		
+		this.setVisible(true);
+	}
+	
+	private class ButtonListener implements ActionListener {
+		@Override
+        public void actionPerformed(ActionEvent e) {
+        	switch (e.getActionCommand()) {
+        		case "Add":
+        			addElement();
+        			break;
+        		case "Remove":
+        			removeElement();
+        			break;
+        		case "Clear":
+        			clearAllElements();
+        			break;
+        	}
+        }
+    }
+	
+	private void updateList() {
+		model = new DefaultListModel<String>();
+		for (String s : this.elementList.getAllElementsAsStrings()) {
+			model.addElement(s.toString());
+		}
+		lstElementsList.setModel(model);
+	}
+	
+	private void addElement() {
+		if (!txtInputField.getText().equals("")) {
+			elementList.addAt(0, txtInputField.getText());
+			updateList();
+		}
+	}
+	
+	private void removeElement() {
+		elementList.removeAt(elementList.find(lstElementsList.getSelectedValue()));
+		updateList();
+	}
+	
+	private void clearAllElements() {
+		elementList.clear();
+		updateList();
+	}
+	
+	public static void main(String[] args) {
+		new MainWindow();
+	}
+}