private JPanel createRegexpTasksPanel() {
JPanel regexpActionPanel = new JPanel();
regexpActionPanel.setLayout(new BoxLayout(regexpActionPanel, BoxLayout.X_AXIS));
Border margin = new EmptyBorder(5, 5, 0, 5);
regexpActionPanel.setBorder(margin);
regexpField = new JLabeledTextField(JMeterUtils.getResString("regexp_tester_field")); // $NON-NLS-1$
regexpActionPanel.add(regexpField, BorderLayout.WEST);
JButton regexpTester = new JButton(JMeterUtils.getResString("regexp_tester_button_test")); // $NON-NLS-1$
regexpTester.setActionCommand(REGEXP_TESTER_COMMAND);
regexpTester.addActionListener(this);