我知道我在哪里以图形方式设计面板内容以及它在jframe中的所有可能方法然后我在另一个jframe中使用该面板，我需要做的就是创建另一帧的实例并获取它面板并将其影响到当前jframe中的面板。
这是我试过的代码 第一个包含我设计的面板模型的jframe：
package chemsou;
import java.util.Hashtable;
import javax.swing.JCheckBox;
import javax.swing.JPanel;
public class CheckListe extends javax.swing.JFrame {
/**
* Creates new form NewJFrame
*/
Hashtable<String, JCheckBox> model = new Hashtable<>();
public JPanel getPanel(){
return jPanel1;
}
public CheckListe(String[] list) {
initComponents();
jPanel1.setLayout(new java.awt.GridLayout(0, 1, 0, 4));
for (String element : list) {
model.put(element, new JCheckBox(element));
jPanel1.add(model.get(element));
}
}
public CheckListe() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setLayout(new java.awt.GridLayout(0, 1, 0, 4));
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 93, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 388, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, 535, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(CheckListe.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(CheckListe.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(CheckListe.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(CheckListe.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new CheckListe().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JPanel jPanel1;
// End of variables declaration
}
我的jframe，我调用第一帧，然后将面板设置为建模面板：
private void jRadioButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String[] list =new String[]{"e1","e2","e3"};
CheckListe checkListe = new CheckListe(list);
// CheckListePanel.setLayout(checkListe.getPanel().getLayout());
CheckListePanel = checkListe.getPanel();
checkListe.setVisible( true );
CheckListePanel.setVisible(true);
CheckListePanel.setSize(100, 500);
CheckListePanel.revalidate();
CheckListePanel.repaint();
System.out.println("done");
}
当我运行代码时，我可以看到另一个jframe包含设计的面板，但调用者jframe不做任何事情
我应该做什么？
答案 0 :(得分：1)
CheckListePanel变量的JPanel对象执行任何操作，以允许显示它。 "is there a way to make a copy a the panel that i designed" - 当然。而不是像你一样创建它，而是在某种工厂方法中创建JPanel。例如，public JPanel createMyPanel() { /* creational code goes in here */ } 例如，这是一个创建JPanel的类，它将一个字符串列表显示为一个JRadioButtons列，然后通知任何观察者选择：
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;
import javax.swing.*;
import javax.swing.border.Border;
@SuppressWarnings("serial")
public class BunchARadios extends JPanel {
private static final int GAP = 5;
public static final String SELECTION = "selection";
private ButtonGroup buttonGroup = new ButtonGroup();
public BunchARadios(String title, List<String> radioLabels) {
Border innerBorder = BorderFactory.createEmptyBorder(GAP, GAP, GAP, GAP);
Border outerBorder = BorderFactory.createTitledBorder(title);
Border border = BorderFactory.createCompoundBorder(outerBorder, innerBorder);
setBorder(border);
setLayout(new GridLayout(0, 1, GAP, GAP));
RButtonListener rButtonListener = new RButtonListener();
for (String radioLabel : radioLabels) {
JRadioButton radioButton = new JRadioButton(radioLabel);
radioButton.setActionCommand(radioLabel);
add(radioButton);
buttonGroup.add(radioButton);
radioButton.addActionListener(rButtonListener);
}
}
public String getSelection() {
ButtonModel model = buttonGroup.getSelection();
if (model == null) {
return null; // throw exception?
} else {
return model.getActionCommand();
}
}
private class RButtonListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
firePropertyChange(SELECTION, null, e.getActionCommand());
}
}
}
这是一个使用上面的类/ JPanel的类，它将一个PropertyChangeListener添加到类中，以便在进行选择时，此类中的另一个组件JList可以显示新的选择：
import java.awt.BorderLayout;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.Arrays;
import java.util.List;
import javax.swing.*;
@SuppressWarnings("serial")
public class TestBunchARadios extends JPanel {
private static final int GAP = 5;
private String title = "Weekdays";
private List<String> labels = Arrays.asList(new String[] { "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday" });
private BunchARadios bunchARadios = new BunchARadios(title, labels);
private DefaultListModel<String> listModel = new DefaultListModel<>();
private JList<String> selectionList = new JList<>(listModel);
public TestBunchARadios() {
selectionList.setPrototypeCellValue("xxxxxxxxxxxxxxxxx");
selectionList.setVisibleRowCount(5);
JScrollPane scrollPane = new JScrollPane(selectionList);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
setBorder(BorderFactory.createEmptyBorder(GAP, GAP, GAP, GAP));
setLayout(new BorderLayout(GAP, GAP));
add(bunchARadios, BorderLayout.CENTER);
add(scrollPane, BorderLayout.LINE_END);
bunchARadios.addPropertyChangeListener(BunchARadios.SELECTION,
new BunchARadiosChangeListener());
}
private class BunchARadiosChangeListener implements PropertyChangeListener {
@Override
public void propertyChange(PropertyChangeEvent evt) {
String selection = (String) evt.getNewValue();
listModel.addElement(selection);
}
}
private static void createAndShowGui() {
TestBunchARadios mainPanel = new TestBunchARadios();
JFrame frame = new JFrame("TestBunchARadios");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> {
createAndShowGui();
});
}
}