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

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);}}