JTable中SelectionModel的一個例子

 

package test;
import java.awt.Dimension;
import java.awt.Container;
import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.JTable;
import javax.swing.JLabel;
import javax.swing.ListSelectionModel;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JPanel;
import javax.swing.JButton;
public class SelectionModelDemo implements ActionListener,ListSelectionListener{
 JTable table = null;
 ListSelectionModel selectionModel = null;
 JLabel label = null;//顯示用戶選取表格的后的變化
 public SelectionModelDemo(){
  JFrame frame = new JFrame();
  String[] name = {"字段1","字段2","字段3","字段4","字段5"};
  String[][] data = new String[5][5];
  int value = 1;
  for(int i=0;i<data.length;i++){
   for(int j=0;j<data[i].length;j++){
    data[i][j] = String.valueOf(value++);
   }
  }
  table = new JTable(data,name);
  table.setDragEnabled(false);
  table.setPreferredScrollableViewportSize(new Dimension(400,80));
  table.setCellSelectionEnabled(true);
  selectionModel =  table.getSelectionModel();
  selectionModel.addListSelectionListener(this);
  JScrollPane scrollPane = new JScrollPane(table);

  JPanel panel = new JPanel();
  JButton button = new JButton("單一選擇");
  button.addActionListener(this);
  panel.add(button);
  button = new JButton("連續區間選擇");
  button.addActionListener(this);
  panel.add(button);
  button = new JButton("多重選擇");
  button.addActionListener(this);
  panel.add(button);

  label = new JLabel("您選取：");

  Container contentPane = frame.getContentPane();
  contentPane.add(panel,BorderLayout.NORTH);
  contentPane.add(scrollPane,BorderLayout.CENTER);
  contentPane.add(label,BorderLayout.SOUTH);

  frame.setTitle("SelectionModelDemo");
  frame.pack();
  frame.setVisible(true);

  frame.addWindowListener(new WindowAdapter(){
   public void windowClosing(WindowEvent e){
    System.exit(0);
   }
  });
 }
 public void actionPerformed(ActionEvent e){
  if(e.getActionCommand().equals("單一選擇")){
   label.setText("您選取了：" + "");
   selectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
  }
  if(e.getActionCommand().equals("連續區間選擇")){
   label.setText("您選取了：" + "");
   selectionModel.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION );
  }
  if(e.getActionCommand().equals("多重選擇")){
   label.setText("您選取了：" + "");
   selectionModel.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
  }
  table.revalidate();
 }
 public void valueChanged(ListSelectionEvent e){
  String tempString = "";
  int[] rows = table.getSelectedRows();
  int[] columns = table.getSelectedColumns();
  for(int i=0;i<rows.length;i++){
   for(int j=0;j<columns.length;j++){
    tempString = tempString + "" + (String)table.getValueAt(rows[i],columns[j]);
   }
  }
  label.setText("您選取了：" + tempString);
 }
 public static void main(String[] args){
  new SelectionModelDemo();
 }
}