mainframe.java~10~

这是各类实用工具的源码100例

package jfiledemo;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;

public class MainFrame extends JFrame {
  private JPanel contentPane;
  private BorderLayout borderLayout1 = new BorderLayout();
  private JComboBox drivers;
  private JTable fileTable;

  File[] dvs;
  Object[][] data;
  String[] ColName = {"Name","isFile","Length","CanRead","CanWrite","LastModified","isHidden"};
  private JScrollPane jScrollPane1 = new JScrollPane();
  private JPanel jPanel1 = new JPanel();
  private BorderLayout borderLayout2 = new BorderLayout();


  //Construct the frame
  public MainFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {



    dvs = File.listRoots();
    String[] names = new String[dvs.length];
    System.out.println(dvs.length);
    for (int i=0;i<dvs.length;i++){
      names[i]=dvs[i].getPath();
      System.out.println(names[i]);
    }

    drivers = new JComboBox(names);
    drivers.setSelectedIndex(4);

    int index = drivers.getSelectedIndex();
    File[] files = dvs[index].listFiles();
    data = new Object[files.length][7];

    for (int i=0;i<files.length;i++){
      data[i][0] = files[i].getName();
      data[i][1] = String.valueOf(files[i].isFile());
      data[i][2] = String.valueOf(files[i].length());
      data[i][3] = String.valueOf(files[i].canRead());
      data[i][4] = String.valueOf(files[i].canWrite());
      data[i][5] = String.valueOf(files[i].lastModified());
      data[i][6] = String.valueOf(files[i].isHidden());

    }

    fileTable = new JTable(data,ColName);
    fileTable.setShowGrid(false);






    //setIconImage(Toolkit.getDefaultToolkit().createImage(MainFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(401, 125));
    this.setTitle("JFileDemo");
    drivers.setFont(new java.awt.Font("Dialog", 0, 14));
    drivers.setToolTipText("");
    drivers.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        drivers_itemStateChanged(e);
      }
    });

    jScrollPane1.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
    jScrollPane1.setDoubleBuffered(true);
    fileTable.setAutoscrolls(false);
    fileTable.setDoubleBuffered(true);
    fileTable.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
    fileTable.setColumnSelectionAllowed(true);
    jPanel1.setLayout(borderLayout2);
    contentPane.add(drivers,  BorderLayout.NORTH);
    contentPane.add(jPanel1, BorderLayout.CENTER);
    jPanel1.add(jScrollPane1,  BorderLayout.CENTER);
    jScrollPane1.add(fileTable);
    contentPane.add(fileTable, BorderLayout.SOUTH);
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void drivers_itemStateChanged(ItemEvent e) {
    JComboBox cb = (JComboBox)e.getSource();
    String driver = (String)cb.getSelectedItem();

  }
}