Content Pane Error in Code

Question

This is an extract from my programme. I get 2 errors:
Error: 300:method getcontentPane() not found in class DBLaender at line 43, column 33
Error: 300. variable borderLayout1 not found in class DBLaender at line 44, column 27
Please can you help me and tell me what's wrong?
public class DBLaender {
JPanel contentPane;
Database database1 = new Database();
QueryDataSet queryDataSet1 = new QueryDataSet();
JdbNavToolBar jdbNavToolBar1 = new JdbNavToolBar();
JPanel jPanel1 = new JPanel();
JPanel jPanel2 = new JPanel();
JPanel jPanel3 = new JPanel();
JdbTextField jdbTextField1 = new JdbTextField();
JdbTextField jdbTextField2 = new JdbTextField();
JdbTextField jdbTextField3 = new JdbTextField();
JdbTextArea jdbTextArea1 = new JdbTextArea();
JdbTextArea jdbTextArea2 = new JdbTextArea();
JdbTextArea jdbTextArea3 = new JdbTextArea();
public static void main(String[] args) {
public DBLaender() {
try {
jbInit();
catch(Exception e) {
e.printStackTrace();
private void jbInit() throws Exception {
contentPane = (JPanel) this.getContentPane();
contentPane.setLayout(borderLayout1);

Answer 1

DBLaender Class should extend from a JFrame or its siblings and borderLayout1 is not defined