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我试图使窗口与内部窗口中，使用的JSpinner设置整数值，一个按钮生成的JInternalFrame，传递的JSpinner值作为参数创建的JInternalFrame。3个JPanels具有可变尺寸和的TextField
此JInternalFrame将包含3个JPannels，它们必须具有colmuns并且行等于JSpinner的值。
所以，我想到了使用JFormatedTextFields的ArrayList和for添加TextFields到ArrayList，用我之前创建的类用一行创建JFormatedTextFields，但我不知道如何使用for添加值。
有代码：
的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);
}
}
类创建的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JFormattedTextFields：
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;
}
}