网站开发必学的技巧有哪些,杭州互联网网站定制公司,手机网站建设解决方案,织梦印刷公司网站源码以下示例显示如何获取选定的行或选定的列#xff0c;或如何选择JTable组件中的多个单元格。要侦听选择事件#xff0c;我们可以JTable通过调用JTable.getSelectionModel().addListSelectionListener()方法将选择侦听器添加到组件。该方法接受实现ListSelectionListener接口的…以下示例显示如何获取选定的行或选定的列或如何选择JTable组件中的多个单元格。要侦听选择事件我们可以JTable通过调用JTable.getSelectionModel().addListSelectionListener()方法将选择侦听器添加到组件。该方法接受实现ListSelectionListener接口的对象。package org.nhooo.example.swing;import javax.swing.*;import javax.swing.event.ListSelectionEvent;import javax.swing.event.ListSelectionListener;import javax.swing.table.AbstractTableModel;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.util.Arrays;public class JTableGetSelectedCells extends JPanel {private JTable table null;public JTableGetSelectedCells() {initializePanel();}private void initializePanel() {setLayout(new BorderLayout());setPreferredSize(new Dimension(500, 200));table new JTable(new PremiereLeagueTableModel());table.getColumnModel().getColumn(0).setMinWidth(150);table.getSelectionModel().addListSelectionListener(new RowColumnListSelectionListener());table.setFillsViewportHeight(true);JScrollPane pane new JScrollPane(table);JPanel control new JPanel(new FlowLayout());final JCheckBox cb1 new JCheckBox(Row Selection);final JCheckBox cb2 new JCheckBox(Columns Selection);final JCheckBox cb3 new JCheckBox(Cells Selection);// 更改行选择允许状态cb1.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {table.setRowSelectionAllowed(cb1.isSelected());table.setColumnSelectionAllowed(!cb1.isSelected());cb2.setSelected(!cb1.isSelected());}});// 更改列选择允许状态cb2.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {table.setColumnSelectionAllowed(cb2.isSelected());table.setRowSelectionAllowed(!cb2.isSelected());cb1.setSelected(!cb2.isSelected());}});// 启用单元格选择cb3.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {table.setCellSelectionEnabled(cb3.isSelected());table.setRowSelectionAllowed(cb3.isSelected());table.setColumnSelectionAllowed(cb3.isSelected());}});control.add(cb1);control.add(cb2);control.add(cb3);add(pane, BorderLayout.CENTER);add(control, BorderLayout.SOUTH);}private class RowColumnListSelectionListener implements ListSelectionListener {public void valueChanged(ListSelectionEvent e) {if (table.getRowSelectionAllowed() !table.getColumnSelectionAllowed()) {int[] rows table.getSelectedRows();System.out.println(Selected Rows: Arrays.toString(rows));}if (table.getColumnSelectionAllowed() !table.getRowSelectionAllowed()) {int[] cols table.getSelectedColumns();System.out.println(Selected Columns: Arrays.toString(cols));} else if (table.getCellSelectionEnabled()) {int selectionMode table.getSelectionModel().getSelectionMode();System.out.println(selectionMode selectionMode);if (selectionMode ListSelectionModel.SINGLE_SELECTION) {int rowIndex table.getSelectedRow();int colIndex table.getSelectedColumn();System.out.printf(Selected [Row,Column] [%d,%d]\n, rowIndex, colIndex);} else if (selectionMode ListSelectionModel.SINGLE_INTERVAL_SELECTION ||selectionMode ListSelectionModel.MULTIPLE_INTERVAL_SELECTION) {int rowIndexStart table.getSelectedRow();int rowIndexEnd table.getSelectionModel().getMaxSelectionIndex();int colIndexStart table.getSelectedColumn();int colIndexEnd table.getColumnModel().getSelectionModel().getMaxSelectionIndex();for (int i rowIndexStart; i rowIndexEnd; i) {for (int j colIndexStart; j colIndexEnd; j) {if (table.isCellSelected(i, j)) {System.out.printf(Selected [Row,Column] [%d,%d]\n, i, j);}}}}}}}private static void showFrame() {JPanel panel new JTableGetSelectedCells();panel.setOpaque(true);JFrame frame new JFrame(JTable Selected Cells Demo);frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);frame.setContentPane(panel);frame.pack();frame.setVisible(true);}public static void main(String[] args) {SwingUtilities.invokeLater(new Runnable() {public void run() {showFrame();}});}class PremiereLeagueTableModel extends AbstractTableModel {// TableModel的列名private String[] columnNames {TEAM, P, W, D, L, GS, GA, GD, PTS};// TableModel的数据private Object[][] data {{ Liverpool, 3, 3, 0, 0, 7, 0, 7, 9 },{ Tottenham, 3, 3, 0, 0, 8, 2, 6, 9 },{ Chelsea, 3, 3, 0, 0, 8, 3, 5, 9 },{ Watford, 3, 3, 0, 0, 7, 2, 5, 9 },{ Manchester City, 3, 2, 1, 0, 9, 2, 7, 7 }};public int getRowCount() {return data.length;}public int getColumnCount() {return columnNames.length;}Overridepublic String getColumnName(int column) {return columnNames[column];}public Object getValueAt(int rowIndex, int columnIndex) {return data[rowIndex][columnIndex];}}}运行程序时将显示以下屏幕。在中选择一些单元格JTable将以ListSelectionModel.MULTIPLE_INTERVAL_SELECTION选择模式打印选定的行选定的列或选定的行和列的某些索引。
