请问JComboBox的问题

Question

可以用它的绘制器，用JLabel做为对象

Answer 1

/*
 * Created on 2004-10-17
 */
package com.yuch.ui;import java.awt.Color;
import java.awt.Component;
//import java.util.Iterator;
//import java.util.List;import javax.swing.JComboBox;
//import javax.swing.JTable;
import javax.swing.JLabel;
import javax.swing.BorderFactory;
import javax.swing.ListCellRenderer;/**
 * @author yuch
 */
public class DataRenderer extends JLabel implements ListCellRenderer {

public DataRenderer() {
// Iterator iter = values.iterator();
// while( iter.hasNext() ) {
// addItem( (String)iter.next() );
// }
}

public Component getListCellRendererComponent( JList list,
Object value,                            int index,
boolean isSelected,
boolean hasFocus) {
if ( isSelected ) {
setBorder( BorderFactory.createLineBorder(Color.red) );
}
else {
setBorder( BorderFactory.createLineBorder(Color.DARK_GRAY) );
}
// if (isSelected) {
//            setForeground( list.getSelectionForeground() );
//            super.setBackground( list.getSelectionBackground() );
//        } else {
//            setForeground(list.getForeground());
//            setBackground(list.getBackground());
//        }        // Select the current value
//        setSelectedItem( value );
setText( value.toString() );

return this;
}
}