mainframe.java~6~

JAVA实现的文件管理中获取系统根目录

package jdriverdemo;

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 ;

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

    File[] 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);


    //setIconImage(Toolkit.getDefaultToolkit().createImage(MainFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(394, 53));
    this.setTitle("JDriverDemo");
    drivers.setAutoscrolls(true);
    drivers.setDoubleBuffered(true);
    contentPane.add(drivers, BorderLayout.CENTER);
  }
  //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);
    }
  }
}