如何在 Swing 中的 JTable 的列中添加不同的 JComboBox 项
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【中文标题】如何在 Swing 中的 JTable 的列中添加不同的 JComboBox 项【英文标题】：how to add different JComboBox items in a Column of a JTable in Swing 【发布时间】：2011-09-09 19:13:15 【问题描述】：我想在第 1 列的 JTable (3,3) 中添加 JComboBox。但在第 1 列中，每一行都有自己的一组 ComboBox 元素。 当我尝试使用
table.getColumnModel().getColumn(1).setCellEditor(new DefaultCellEditor(comboBox_Custom));
每一行都被设置为相同的组合框值集。 但我希望每一行 ComboBox 都有不同的项目。
【问题讨论】：
【参考方案1】：java2s.com 上的示例看起来可以正常工作，然后例如（我对 JComboBoxes 进行了编码以作为快速示例，并为今天的 Swing 添加/更改）
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.UIManager.LookAndFeelInfo;
import javax.swing.table.*;
public class EachRowEditorExample extends JFrame
private static final long serialVersionUID = 1L;
public EachRowEditorExample()
super("EachRow Editor Example");
try
for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels())
System.out.println(info.getName());
if ("Nimbus".equals(info.getName()))
UIManager.setLookAndFeel(info.getClassName());
break;
catch (UnsupportedLookAndFeelException e)
// handle exception
catch (ClassNotFoundException e)
// handle exception
catch (InstantiationException e)
// handle exception
catch (IllegalAccessException e)
// handle exception
DefaultTableModel dm = new DefaultTableModel();
dm.setDataVector(new Object[][]"Name", "MyName", "Gender", "Male", "Color", "Fruit", new Object[]"Column1", "Column2");
JTable table = new JTable(dm);
table.setRowHeight(20);
JComboBox comboBox = new JComboBox();
comboBox.addItem("Male");
comboBox.addItem("Female");
comboBox.addComponentListener(new ComponentAdapter()
@Override
public void componentShown(ComponentEvent e)
final JComponent c = (JComponent) e.getSource();
SwingUtilities.invokeLater(new Runnable()
@Override
public void run()
c.requestFocus();
System.out.println(c);
if (c instanceof JComboBox)
System.out.println("a");
);
);
JComboBox comboBox1 = new JComboBox();
comboBox1.addItem("Name");
comboBox1.addItem("MyName");
comboBox1.addComponentListener(new ComponentAdapter()
@Override
public void componentShown(ComponentEvent e)
final JComponent c = (JComponent) e.getSource();
SwingUtilities.invokeLater(new Runnable()
@Override
public void run()
c.requestFocus();
System.out.println(c);
if (c instanceof JComboBox)
System.out.println("a");
);
);
JComboBox comboBox2 = new JComboBox();
comboBox2.addItem("Banana");
comboBox2.addItem("Apple");
comboBox2.addComponentListener(new ComponentAdapter()
@Override
public void componentShown(ComponentEvent e)
final JComponent c = (JComponent) e.getSource();
SwingUtilities.invokeLater(new Runnable()
@Override
public void run()
c.requestFocus();
System.out.println(c);
if (c instanceof JComboBox)
System.out.println("a");
);
);
EachRowEditor rowEditor = new EachRowEditor(table);
rowEditor.setEditorAt(0, new DefaultCellEditor(comboBox1));
rowEditor.setEditorAt(1, new DefaultCellEditor(comboBox));
rowEditor.setEditorAt(2, new DefaultCellEditor(comboBox2));
table.getColumn("Column2").setCellEditor(rowEditor);
JScrollPane scroll = new JScrollPane(table);
getContentPane().add(scroll, BorderLayout.CENTER);
setPreferredSize(new Dimension(400, 120));
setLocation(150, 100);
pack();
setVisible(true);
public static void main(String[] args)
EachRowEditorExample frame = new EachRowEditorExample();
frame.addWindowListener(new WindowAdapter()
@Override
public void windowClosing(WindowEvent e)
System.exit(0);
);
只需添加 EachRowEditor 类
【讨论】：
【参考方案2】：package com.atos.table.classes;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.HashMap;
import javax.swing.DefaultCellEditor;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumnModel;
public class PartCustomerWindow2
public static final Object[][] DATA = 1, 2,3, 4,false , 5, 6,7, 8 ,true, 9, 10,11, 12,true , 13, 14,15, 16,true ;
public static final String[] COL_NAMES = "One", "Two", "Three", "Four",MyTableModel1.SELECT ;
JButton but = new JButton("Add");
private JComboBox jcomboBox = null;
private JTextField jTextField = null;
static Object[][] rowData = null;
private JTable table=null;
static JFrame frame = null;
HashMap mp = null;
static int count = 0;
String content = null;
public JTextField getjTextField()
if(jTextField == null)
jTextField = new FMORestrictedTextField(FMORestrictedTextField.JUST_ALPHANUMERIC, 8);
mp = new HashMap();
mp.put("arif",2);
mp.put("8",6);
mp.put("12",10);
mp.put("14",16);
mp.put("pk1",22);
mp.put("pk3",23);
jTextField.addKeyListener(new KeyAdapter()
public void keyReleased(KeyEvent event)
if(count == 0)
content = jTextField.getText();
// System.out.println(content);
if(mp.containsKey(content))
JFrame parent = new JFrame();
JOptionPane.showMessageDialog(parent, "Already Assigned");
);
return jTextField;
public void setjTextField(JTextField jTextField)
this.jTextField = jTextField;
public JComboBox getJcomboBox()
if(jcomboBox == null)
jcomboBox = new JComboBox();
return jcomboBox;
public void setJcomboBox(JComboBox jcomboBox)
this.jcomboBox = jcomboBox;
private void createAndShowGui(PartCustomerWindow2 ob)
/*rowData = new Object[DATA.length][];
for (int i = 0; i < rowData.length; i++)
rowData[i] = new Object[DATA[i].length + 1];
for (int j = 0; j < DATA[i].length; j++)
rowData[i][j] = DATA[i][j];
rowData[i][DATA[i].length] = Boolean.TRUE;
if(i == 2 || i ==3)
rowData[i][DATA[i].length] = Boolean.FALSE;
*/
MyTableModel3 tableModel = new MyTableModel3(DATA, COL_NAMES, "My Table", ob);
table = new JTable(tableModel);
//table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
/*table.addFocusListener(new java.awt.event.FocusAdapter()
public void focusLost(java.awt.event.FocusEvent evt)
table.getSelectionModel().clearSelection();
);*/
TableColumnModel cm = table.getColumnModel();
/*cm.getColumn(2).setCellEditor(new DefaultCellEditor(
new JComboBox(new DefaultComboBoxModel(new String[]
"Yes",
"No",
"Maybe"
))));*/
/* String ar1[]= "aa","aaa","aaaa";
ob.getJcomboBox().setModel(new DefaultComboBoxModel(ar1));*/
cm.getColumn(2).setCellEditor(new DefaultCellEditor(
ob.getJcomboBox()));
cm.getColumn(3).setCellEditor(new DefaultCellEditor(
ob.getjTextField()));
JScrollPane scrollPane = new JScrollPane();
/* scrollPane.add("Table",table);
scrollPane.add("Button",but);*/
JFrame frame2 = new JFrame();
/* jcomboBox.setPreferredSize(new Dimension(100,20));
textField.setPreferredSize(new Dimension(100,20));
jcomboBox.setEnabled(false);
textField.setEnabled(false);
*/
JScrollPane scrollPane2 = new JScrollPane(but);
but.addActionListener(new ActionListener()
@Override
public void actionPerformed(ActionEvent e)
if(table.getCellEditor() != null)
table.getCellEditor().stopCellEditing();
// TODO Auto-generated method stub
String[][] ar = new String[table.getRowCount()][5];
for(int i =0;i<table.getRowCount();i++)
for(int j=0;j<5;j++)
DATA[i][j] = table.getValueAt(i,j);
System.out.print(table.getValueAt(i,0)+" ");
System.out.print(table.getValueAt(i,1)+" ");
System.out.print(table.getValueAt(i,2)+" ");
System.out.print(table.getValueAt(i,3)+" ");
System.out.println(table.getValueAt(i,4)+" ");
System.out.println("*******************");
/*
for(int i=0;i<DATA.length;i++)
System.out.print(DATA[i][0]);
System.out.print(DATA[i][1]);
System.out.print(DATA[i][2]);
System.out.print(DATA[i][3]);
boolean check =(Boolean) DATA[i][4];
System.out.println(check);
*/
);
frame = new JFrame("PartCustomerWindow2");
//
//JFrame frame = new JFrame();
Container contentPane = frame.getContentPane();
contentPane.setLayout(new BorderLayout());
contentPane.add(new JScrollPane(table), BorderLayout.NORTH);
contentPane.add(but);
//
//frame.setLayout(new FlowLayout());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
/* frame.getContentPane().add(scrollPane2);
frame.getContentPane().add(scrollPane3);
frame.getContentPane().add(scrollPane4);*/
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
public static void main(String[] args)
PartCustomerWindow2 ob = new PartCustomerWindow2();
ob.createAndShowGui(ob);
@SuppressWarnings("serial")
class MyTableModel3 extends DefaultTableModel
public static final String SELECT = "select";
String tablename;
PartCustomerWindow2 ob = null;
public MyTableModel3(Object[][] rowData, Object[] columnNames, String tableName,PartCustomerWindow2 ob)
super(rowData, columnNames);
this.tablename = tableName;
this.ob = ob;
@Override
public Class<?> getColumnClass(int columnIndex)
if (getColumnName(columnIndex).equalsIgnoreCase(SELECT))
return Boolean.class;
else
return super.getColumnClass(columnIndex);
@Override
public boolean isCellEditable(int row, int col)
JComboBox jb = ob.getJcomboBox();
JTextField jt = ob.getjTextField();
if(((Boolean) getValueAt(row, getColumnCount() - 1)).booleanValue())
// jb.setEnabled(false);
jb.removeAllItems();
// System.out.println(jb.getItemCount());
if(row == 0)
jb.addItem("arif");
jb.addItem("asif");
jb.addItem("ashik");
jb.addItem("farooq");
jb.addItem("adkh");
if(row > 0)
jb.addItem("kjhds");
jb.addItem("sdds");
jb.addItem("asdfsdk");
jb.addItem("sdfsdf");
jb.addItem("sdf");
/*HashMap mp = new HashMap();
mp.put("arif",2);
mp.put("8",6);
mp.put("12",10);
mp.put("14",16);
mp.put("pk1",22);
mp.put("pk3",23);
*/
/* if(col == 3)
if(mp.containsKey(jt.getText()))
System.out.println("Sorry..!! already assigned");
jt.setFocusable(true);
jt.setText("");
jt.setEnabled(false);
*/
else
// jb.setEnabled(true);
//jt.setEnabled(true);
if (col == getColumnCount()-1 )
return true;
else
if (getColumnName(4).equalsIgnoreCase(SELECT) && ((Boolean) getValueAt(row, getColumnCount() - 1)).booleanValue())
// jb.setEnabled(true);
// jt.setEnabled(true);
return (col == 2 || col == 3);
else
// jb.setEnabled(false);
//jt.setEnabled(false);
return false;
【讨论】：
这篇文章将帮助您在 JTable 中添加一个选择复选框，并在选择它时启用该行的特定列，并且每行的组合框也具有不同的项目值 请在答案中解释一下您的代码，因为它有点长，社区更容易理解它 此代码可帮助您在每一行中添加不同的 ComboBox 项目，因为我正在传递 Hashmap，如果第一个 col 作为 hashmap 中的键，我将根据第一个值分配项目。 MyTableModel 是具有单元格可编辑功能的 TableModel以上是关于如何在 Swing 中的 JTable 的列中添加不同的 JComboBox 项的主要内容，如果未能解决你的问题，请参考以下文章