20100919_Dawning_JTable

package com.swing.demo;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;/*** * 基于Java图形界面JTable测试案例 * * @author Administrator * */public class TableSortDemo extends JPanel { 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 { //设置每一列的列名private String[] columnNames = {"First Name","Last Name","Sport", "# of Years", "Vegetarian"}; //设置列的值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) { 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; 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("--------------------------"); } } private static void createAndShowGUI() { JFrame frame = new JFrame("TableSortDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); TableSortDemo newContentPane = new TableSortDemo(); newContentPane.setOpaque(true); //content panes must be opaque frame.setContentPane(newContentPane); //Display the window.frame.setSize(500,500); frame.setVisible(true); } public static void main(String[] args) { javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); }}