14. 58. 20. 表格选择与监听事件 Table Selection Events and Listeners

最新推荐文章于 2024-05-24 21:42:59 发布

最新推荐文章于 2024-05-24 21:42:59 发布 · 191 阅读

本文介绍如何在Java中使用JTable组件，并通过ListSelectionListener接口实现单元格选择事件监听，获取所选单元格的数据。

import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.ListSelectionModel; import javax.swing.event.ListSelectionEvent; import javax.swing.event.ListSelectionListener; public class JTableListSelectionListener { public static void main(String[] args) { JFrame f = new JFrame("JTableListSelectionListener"); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); final JTable table; String[] columnTitles = {"A","B","C","D"}; Object[][] rowData = {{ "11", "12", "13", "14" }, { "21", "22", "23", "24" }, { "31", "32", "33", "34" }, { "41", "42", "44", "44" } }; table = new JTable(rowData,columnTitles); table.setCellSelectionEnabled(true);//设置此表是否允许同时存在行选择和列选择。 //返回用来维持行选择状态的 ListSelectionModel。 //此接口表示任何组件的当前选择状态，该组件显示一个具有稳定索引的值列表。 ListSelectionModel cellSelectionModel = table.getSelectionModel(); //单选,只能选择一个单元格 cellSelectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); cellSelectionModel.addListSelectionListener(new ListSelectionListener(){ public void valueChanged(ListSelectionEvent e) {//单元格值变动事件 String selectedData = null; int[] selectedRow = table.getSelectedRows();//被选择的行 int[] selectedColumns = table.getSelectedColumns();//被选择的列 for(int i = 0; i < selectedRow.length; i++){//循环取出 for(int j = 0; j < selectedColumns.length; j++){ selectedData = (String)table.getValueAt(selectedRow[i], selectedColumns[j]); } } System.out.println("选择的: " + selectedData); } }); f.add(new JScrollPane(table)); f.setSize(300,200); f.setVisible(true); } }