使用JCombox实现TableCellRenderer作为JTable的单元格例子

package test;

import java.awt.Component;

import javax.swing.JTable;

import javax.swing.JComboBox;

import javax.swing.JFrame;

import javax.swing.JScrollPane;

import javax.swing.table.DefaultTableModel;

import javax.swing.table.TableColumn;

import javax.swing.table.TableCellRenderer;

import javax.swing.DefaultCellEditor;

public class Main{

public static void main(String[] args){

JTable table = new JTable();

DefaultTableModel model = (DefaultTableModel)table.getModel();

model.addColumn("A",new Object[]{"item1"});

model.addColumn("B",new Object[]{"item2"});

String[] values = {"1","2","3"};

TableColumn col = table.getColumnModel().getColumn(0);

col.setCellEditor(new MyComboBoxEditor(values));

col.setCellRenderer(new MyComboBoxRenderer(values));

JFrame frame = new JFrame();

frame.setContentPane(new JScrollPane(table));

frame.pack();

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setVisible(true);

}

}

class MyComboBoxRenderer extends JComboBox implements TableCellRenderer{

public MyComboBoxRenderer(String[] items){

super(items);

}

public Component getTableCellRendererComponent(JTable table,Object value,boolean isSelected,boolean hasFocus,int row,int column){

if(isSelected){

setForeground(table.getSelectionForeground());

super.setBackground(table.getSelectionBackground());

}else{

setForeground(table.getForeground());

setBackground(table.getBackground());

}

setSelectedItem(value);

return this;

}

}

class MyComboBoxEditor extends DefaultCellEditor{

public MyComboBoxEditor(String[] items){

super(new JComboBox(items));

}

}