我想在gridbaglayout中链接2个单元格。我用netbeans，所以我用jappletform写。

JTextField dodawanyTextField = new javax.swing.JTextField();

dodawanyTextField.setText(nazwaLekcjiTextField.getText());

gridBagConstraints = new java.awt.GridBagConstraints();
gridBagConstraints.gridwidth = 2;
gridBagConstraints.gridx = 2;
gridBagConstraints.gridy = 2;

jPanel3.add(dodawanyTextField, gridBagConstraints);

但它不起作用。