java swing 中JTable实现指定单元格为下拉框

利用自定义的CellEditor实现第四列第二行为下拉框，本列其余行为文本框 利用默认的DefaultCellEditor设置第五列整列为下拉框   package mypackage; import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.util.EventObject; import javax.swing.AbstractCellEditor;
import javax.swing.JComboBox;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.TableCellEditor;
/**
 * 自定义celleditor实现
 * 指定单元格设置下拉框，其他单元格设置文本框
 *
 */
public class JBoxTestCell  extends AbstractCellEditor implements
TableCellEditor {
    int row;
    private JTable table;
    private JPanel p1;
    private JComboBox jbox;
    private Object val = null;
    private JTextField jt_0=new JTextField();
    private JTextField jt_2=new JTextField();
    public JBoxTestCell() {
        p1 = new JPanel(new BorderLayout());
  
        p1.setPreferredSize(new Dimension(300, 30));
        String[] interest1 = { "rap", "手指舞", "理发","冲天炮"};
        jbox = new JComboBox(interest1);
        jbox.setPreferredSize(new Dimension(200,25));
        jbox.setSelectedIndex(0);
        p1.add(jbox, BorderLayout.CENTER);
    }     @Override
    public boolean isCellEditable(EventObject anEvent) {
        return true;
    }
    public void showSave() {
     jbox.setVisible(true);
    }     public Object getCellEditorValue() {
       if(row==1) {
     String v1 = jbox.getSelectedItem().toString();
        return v1;
       }
       String result="";
       switch(this.row) {
  case 0 : result = jt_0.getText().trim(); break;
  case 2 : result = jt_2.getText().trim(); break;
       }
       return result;
    }
   
    public Component getTableCellEditorComponent(JTable table, Object value,
            boolean isSelected, int row, int column) {
        this.table = table;
        this.row = row;
        val = value;
        JTextField result = new JTextField();
  switch(this.row) {
  case 0 : result = jt_0; break;
  case 1 : return this.jbox;
  case 2 : result = jt_2; break;
  }
  return result;
    }
}         package mypackage; import java.awt.Dimension;
import java.util.Vector; import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ScrollPaneConstants;
import javax.swing.table.TableColumnModel;
import java.awt.Font;
/**
 * 测试类
 * 实现第四列第二行为下拉框，其余行为文本框
 * 第五列一列为下拉框
 */ public class Test {
 
 public static void main(String[] args) {
  JFrame frame = new JFrame();
  frame.setBounds(100, 100, 500, 400);
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.getContentPane().setLayout(null);
  JPanel panel = new JPanel();
  panel.setLayout(null);
  panel.setBounds(0, 0, 484, 361);
  frame.getContentPane().add(panel);
  frame.setVisible(true);
  
  String[][] str= {{"小贾","13","160","帽子",""},{"阿P","16","165","rap",""},{"小李","19","158","做头发",""}};
  String[] title= {"姓名","年龄","身高","爱好1","爱好2"};
  JTable table = new JTable(str,title);//测试表格
  table.setFont(new Font("微软雅黑", Font.PLAIN, 12));
  
  JScrollPane scrollPane_1 = new JScrollPane(table);//滚动组件
  scrollPane_1.setBounds(0, 0, 484, 361);
  scrollPane_1.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
  panel.add(scrollPane_1);
  
  JBoxTestCell jc = new JBoxTestCell();//第四列第二行为下拉框，其余行为文本框
  TableColumnModel tcm = table.getColumnModel();
  tcm.getColumn(3).setCellEditor(jc);
  
  String[] str2 = { "rap", "手指舞", "理发","冲天炮"};
  JComboBox jbox= new JComboBox(str2);
  jbox.setSelectedIndex(0);
  TableColumnModel col = table.getColumnModel();
  col.getColumn(4).setCellEditor(new DefaultCellEditor(jbox));//设置第5列一列为下拉框
 } }   效果图：

原文链接:https://www.cnblogs.com/jungledove/p/11801982.html
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