Java - Ayuda con loyouts

int etiquetaTara = 0;

int desplegable = 0;

int etiquetaPalet = 0;

int texto = 0;

JLabel[] etiquetasPalet;

JLabel[] etiquetasTara;

etiquetasPalet = new JLabel[26];

etiquetasTara = new JLabel[26];

JComboBox[] desplegables;

desplegables = new JComboBox[26];

JTextField textos[];

textos = new JTextField[52];

for (int i = 0; i < 52; i++) {

	textos[i] = new JTextField(100);

	//textos[i].setMinimumSize(minimumSize);

	//textos[i].setVisible(true);

}

for (int i = 0; i < 26; i++) {

	etiquetasPalet[i] = new JLabel("Tara " + (i + 1) + ":");

	etiquetasTara[i] = new JLabel("Palet " + (i + 1) + ":");

	desplegables[i] = new JComboBox();

}

GridBagConstraints constraints = new GridBagConstraints();

constraints.insets = new Insets(3, 3, 3, 3);

jPanel4.setLayout(new GridBagLayout());

//new Insets(arriba, izquierda, abajo, derecha);

//constraints.insets = new Insets(1, 3, 1, 3);

for (int i = 0; i < 12; i++) {

	for (int j = 0; j < 10; j++) {

		//System.out.println(i + "," + j);

		constraints.gridx = j;

		constraints.gridy = i;

		constraints.gridwidth = 1;

		constraints.gridheight = 1;

		constraints.weightx = 1;

		constraints.fill = GridBagConstraints.HORIZONTAL;

		switch (j) {

			case 0:

			case 5:

				//System.out.println("Palet" + etiquetaPalet);

				jPanel4.add(etiquetasPalet[etiquetaPalet], constraints);

				etiquetaPalet++;

				break;

			case 4:

			case 9:

				//System.out.println("Combo" + desplegable);

				jPanel4.add(desplegables[desplegable], constraints);

				desplegable++;

				break;

			case 2:

			case 7:

				//System.out.println("Tara" + etiquetaTara);

				jPanel4.add(etiquetasTara[etiquetaTara], constraints);

				etiquetaTara++;

				break;

			case 1:

			case 3:

			case 6:

			case 8:

				//System.out.println("TextField" + texto);

				jPanel4.add(textos[texto], constraints);

				texto++;

			default:

				break;

		}

	}

}