addActionSaveButton

src/main/java/Notizbuch.java

@@ -31,6 +31,7 @@ public class Notizbuch extends JFrame implements ActionListener {
 		add(new JScrollPane(textArea), BorderLayout.CENTER);
 		
 		saveButton = new JButton("Speichern");
+		saveButton.addActionListener(this);
 	}
 
 	@Override