public void actionPerformed(ActionEvent event) { // if both names are entered on the search if (!firstNameField.getText().equals("") && !lastNameField.getText().equals("")) { searchVector.clear(); for (int i = 0; i < patientVector.size(); i++) { Patient p1 = (Patient) patientVector.elementAt(i); if (firstNameField.getText().matches(p1.getFirstName()) && lastNameField.getText().equals(p1.getLastName())) searchVector.add(p1); } if (searchVector.size() == 0) JOptionPane.showMessageDialog(patientListLabel, "Patient not found! 1"); else { searchList = new JList(searchVector); searchList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); scrollSearchList = new JScrollPane(searchList); searchPanel.removeAll(); searchPanel.add(patientInfoPanel); searchPanel.add(patientListLabel); searchPanel.add(scrollSearchList); searchPanel.add(buttonPanel); repaint(); revalidate(); } } // if only the first name is entered on the search else if (lastNameField.getText().equals("") && !firstNameField.getText().equals("")) { searchVector.clear(); System.out.println("dasdas"); for (int i = 0; i < patientVector.size(); i++) { System.out.println("dasdas" + i); Patient p1 = (Patient) patientVector.elementAt(i); if (firstNameField.getText().matches(p1.getFirstName())) searchVector.add(p1); } if (searchVector.size() == 0) JOptionPane.showMessageDialog(patientListLabel, "Patient not found!2"); else { searchList = new JList(searchVector); searchList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); scrollSearchList = new JScrollPane(searchList); searchPanel.removeAll(); searchPanel.add(patientInfoPanel); searchPanel.add(patientListLabel); searchPanel.add(scrollSearchList); searchPanel.add(buttonPanel); repaint(); revalidate(); } } // if only the last name is entered on the search else if (firstNameField.getText().equals("") && !lastNameField.getText().equals("")) { searchVector.clear(); for (int i = 0; i < patientVector.size(); i++) { Patient p1 = (Patient) patientVector.elementAt(i); if (lastNameField.getText().matches(p1.getLastName())) searchVector.add(p1); } if (searchVector.size() == 0) JOptionPane.showMessageDialog(patientListLabel, "Patient not found!"); else { searchList = new JList(searchVector); searchList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); scrollSearchList = new JScrollPane(searchList); searchPanel.removeAll(); searchPanel.add(patientInfoPanel); searchPanel.add(patientListLabel); searchPanel.add(scrollSearchList); searchPanel.add(buttonPanel); repaint(); revalidate(); } } // if the fields are empty, show the complete set of patient else { searchPanel.removeAll(); searchPanel.add(patientInfoPanel); searchPanel.add(patientListLabel); searchPanel.add(scrollPatientList); searchPanel.add(buttonPanel); repaint(); revalidate(); } }