使用3个具有可变大小和文本字段的JPanel创建JInternalFrame

Question

我正在尝试制作一个带有内部窗口的窗口，使用JSpinner设置整数值，使用按钮生成JInternalFrame，将JSpinner值作为参数传递。

此JInternalFrame将包含3个JPannel，其中它们必须具有等于JSpinner值的colmun和行。

因此，我考虑使用JFormatedTextFields的ArrayList和for将TextFields添加到ArrayList，并使用我之前创建的一个类来创建一行JFormatedTextFields，但我不知道如何使用for来添加值。

代码是：

JDialog:

package br.edu.faculdadedosguararapes;
import java.awt.EventQueue;
import javax.swing.JDialog;
import javax.swing.JSpinner;
import java.awt.BorderLayout;
import javax.swing.JPanel;
import java.awt.FlowLayout;
import java.beans.PropertyVetoException;
import javax.swing.border.TitledBorder;
import javax.swing.border.EtchedBorder;
import javax.swing.JButton;
import javax.swing.SpinnerNumberModel;
import javax.swing.JScrollPane;
import java.awt.Color;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class Soma extends JDialog {
    private JSpinner spinner;
    private JPanel panelLinhasEColunas;
    private JPanel panelTop;
    private JScrollPane scrollPanePrincipal;
    private JButton btnGerarMatrizes;
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    Soma dialog = new Soma();
                    dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
                    dialog.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }
    /**
     * Create the dialog.
     * @throws PropertyVetoException 
     */
    public Soma() throws PropertyVetoException {
        setTitle("Soma de Matrizes");
        setModalityType(ModalityType.APPLICATION_MODAL);
        setBounds(100, 100, 573, 447);
        panelTop = new JPanel();
        getContentPane().add(panelTop, BorderLayout.NORTH);
        panelTop.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5));
        panelLinhasEColunas = new JPanel();
        panelLinhasEColunas.setBorder(new TitledBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null), "Numero de Colunas e Linhas", TitledBorder.CENTER, TitledBorder.TOP, null, new Color(51, 51, 51)));
        panelTop.add(panelLinhasEColunas);
        spinner = new JSpinner();
        spinner.setModel(new SpinnerNumberModel(2, 2, 10, 1));
        panelLinhasEColunas.add(spinner);
        btnGerarMatrizes = new JButton("Gerar Matrizes");
        btnGerarMatrizes.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                int valor = (Integer) spinner.getValue();
                GerarMatrizes soma = new GerarMatrizes();
                soma.GerarSoma(valor, scrollPanePrincipal, btnGerarMatrizes);
                btnGerarMatrizes.setEnabled(false);
            }
        });
        panelLinhasEColunas.add(btnGerarMatrizes);
        scrollPanePrincipal = new JScrollPane();
        getContentPane().add(scrollPanePrincipal, BorderLayout.CENTER);
    }
}

类来创建JInternalFrame:

package br.edu.faculdadedosguararapes;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.util.ArrayList;
import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JFormattedTextField;
import javax.swing.JInternalFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.border.EtchedBorder;
import javax.swing.border.TitledBorder;
import javax.swing.event.InternalFrameAdapter;
import javax.swing.event.InternalFrameEvent;
public class GerarMatrizes {
    public void GerarSoma(int valor, JScrollPane pane, final JButton botao){
        ArrayList<JFormattedTextField> campos = new ArrayList<JFormattedTextField>();
        JInternalFrame internalFrame = new JInternalFrame("");
        internalFrame.addInternalFrameListener(new InternalFrameAdapter() {
            @Override
            public void internalFrameClosed(InternalFrameEvent arg0) {
                botao.setEnabled(true);
            }
        });
        internalFrame.setClosable(true);
        internalFrame.setBorder(null);
        internalFrame.setVisible(true);
        pane.setViewportView(internalFrame);
        Component rigidArea = Box.createRigidArea(new Dimension(20, 20));
        internalFrame.getContentPane().add(rigidArea, BorderLayout.NORTH);
        Component rigidArea_1 = Box.createRigidArea(new Dimension(20, 20));
        internalFrame.getContentPane().add(rigidArea_1, BorderLayout.SOUTH);
        JPanel panel = new JPanel();
        internalFrame.getContentPane().add(panel, BorderLayout.CENTER);
        JPanel panelMatrizA = new JPanel();
        panelMatrizA.setBorder(new TitledBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null), "Matriz A", TitledBorder.CENTER, TitledBorder.TOP, null, null));
        panel.add(panelMatrizA);
        panelMatrizA.setLayout(new GridLayout(valor, valor, 5, 5));
        Component horizontalStrut = Box.createHorizontalStrut(20);
        panel.add(horizontalStrut);
        JPanel panelMatrizB = new JPanel();
        panelMatrizB.setBorder(new TitledBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null), "Matriz B", TitledBorder.CENTER, TitledBorder.TOP, null, null));
        panel.add(panelMatrizB);
        panelMatrizB.setLayout(new GridLayout(valor, valor, 5, 5));
        Component horizontalStrut_1 = Box.createHorizontalStrut(20);
        panel.add(horizontalStrut_1);
        JButton btnSomar = new JButton("Somar");
        panel.add(btnSomar);
        JPanel panelMatrizRes = new JPanel();
        panelMatrizRes.setBorder(new TitledBorder(new EtchedBorder(EtchedBorder.LOWERED, null, null), "Matriz Resultante", TitledBorder.CENTER, TitledBorder.TOP, null, null));
        panel.add(panelMatrizRes);
        panelMatrizRes.setLayout(new GridLayout(valor, valor, 5, 5));
        /*for (int i=1; i < valor; i++){
            campos.add(i);
        }*/
    }
}

和类来创建JFormatedTextFields:

package br.edu.faculdadedosguararapes;
import javax.swing.JFormattedTextField;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.text.AbstractDocument;
import javax.swing.text.DocumentFilter;
public class GeraObjeto {
        public JFormattedTextField novoFtf(JFormattedTextField nome, JPanel panel){
            nome = new JFormattedTextField();
            nome.setHorizontalAlignment(SwingConstants.CENTER);
            nome.setColumns(2);
            DocumentFilter filtro = new FiltroNumero();
            ((AbstractDocument) nome.getDocument()).setDocumentFilter(filtro);
            panel.add(nome);
            return nome;
        }
}

Answer 1

好吧，我已经更改了

ArrayList<JFormattedTextField> campos = new ArrayList<JFormattedTextField>();

至

JFormattedTextField[] camposA = new JFormattedTextField[valor*valor]; GeraObjeto textField = new GeraObjeto();

因此，使用一个简单的类来创建类似的JFormatedTextFields（GeraObjeto）

for (int i=0; i < valor*valor; i++){
    camposA[i] = textField.novoFtf(camposA[i], panelMatrizA);
}

它运行良好。