点击jtable的表头，数据会根据根据表头来排序

import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.JTable;import javax.swing.table.AbstractTableModel;import java.awt.Dimension;import java.awt.GridLayout;public class TableSortDemo extends JPanel {private static final long serialVersionUID = 1L;private boolean DEBUG = false;public TableSortDemo() {super(new GridLayout(1, 0));JTable table = new JTable(new MyTableModel());table.setPreferredScrollableViewportSize(new Dimension(500, 70));table.setFillsViewportHeight(true);table.setAutoCreateRowSorter(true);//这句话是重点        //Create the scroll pane and add the table to it.        JScrollPane scrollPane = new JScrollPane(table);//Add the scroll pane to this panel.        add(scrollPane);}class MyTableModel extends AbstractTableModel {private String[] columnNames = { "First Name", "Last Name", "Sport", "# of Years", "Vegetarian" };private Object[][] data = { { "Mary", "Campione", "Snowboarding", new Integer(5), new Boolean(false) },{ "Alison", "Huml", "Rowing", new Integer(3), new Boolean(true) },{ "Kathy", "Walrath", "Knitting", new Integer(2), new Boolean(false) },{ "Sharon", "Zakhour", "Speed reading", new Integer(20), new Boolean(true) },{ "Philip", "Milne", "Pool", new Integer(10), new Boolean(false) }, };public int getColumnCount() {return columnNames.length;}public int getRowCount() {return data.length;}public String getColumnName(int col) {return columnNames[col];}public Object getValueAt(int row, int col) {return data[row][col];} /* * * JTable uses this method to determine the default renderer/ * editor for each cell. If we didn't implement this method, * then the * last column would contain text ("true"/"false"), * rather than a check box. */public Class getColumnClass(int c) {return getValueAt(0, c).getClass();} /* * Don't need to implement this method unless your table's * editable. */public boolean isCellEditable(int row, int col) { //Note that the data/cell address is constant,           //no matter where the cell appears onscreen.      if (col < 2) {return false;} else {return true;}} /* * Don't need to implement this method unless your table's * data can change. */public void setValueAt(Object value, int row, int col) {if (DEBUG) {System.out.println("Setting value at " + row + "," + col + " to " + value + " (an instance of " + value.getClass() + ")");}data[row][col] = value;// Normally, one should call fireTableCellUpdated() when     // a value is changed.  However, doing so in this demo     // causes a problem with TableSorter.  The tableChanged()   // call on TableSorter that results from calling   // fireTableCellUpdated() causes the indices to be regenerated  // when they shouldn't be.  Ideally, TableSorter should be   // given a more intelligent tableChanged() implementation,   // and then the following line can be uncommented.      // fireTableCellUpdated(row, col);      if (DEBUG) {System.out.println("New value of data:");printDebugData();}}private void printDebugData() {int numRows = getRowCount();int numCols = getColumnCount();for (int i = 0; i < numRows; i++) {System.out.print("    row " + i + ":");for (int j = 0; j < numCols; j++) {System.out.print("  " + data[i][j]);}System.out.println();}System.out.println("--------------------------");}}/** * Create the GUI and show it. For thread safety, * this method should be invoked from the * event-dispatching thread. */private static void createAndShowGUI() { //Create and set up the window.       JFrame frame = new JFrame("TableSortDemo");frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//Create and set up the content pane.       TableSortDemo newContentPane = new TableSortDemo();newContentPane.setOpaque(true); //content panes must be opaque  frame.setContentPane(newContentPane); //Display the window.   frame.pack();frame.setVisible(true);}public static void main(String[] args) {//Schedule a job for the event-dispatching thread:        //creating and showing this application's GUI.       javax.swing.SwingUtilities.invokeLater(new Runnable() {public void run() {createAndShowGUI();}});}}

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