FileDialogでフォルダを指定させるには

public class FileDialogTEST  extends JFrame implements ActionListener {
	public FileDialogTEST(){
		this.addWindowListener( new WindowAdapter() {
		      public void windowClosing(WindowEvent e) {
		        System.exit(0);
		      }
		    });
		
		JButton load =new JButton("LOAD");
		load.addActionListener(this);
		this.add(load);
		this.pack();
		
		this.setResizable(false);
		this.setVisible(true);
	}
	
	public void actionPerformed(ActionEvent e) {
		if (e.getActionCommand() == "LOAD" ) {
			FileDialog fd = new FileDialog(new Frame(),"読み込み" , FileDialog.LOAD);
			fd.setVisible(true);
			System.out.println("ディレクトリ　"+fd.getDirectory());
			System.out.println("ファイル名　　"+fd.getFile());
			
			fd=null;
			System.gc();
		}
	}

	public static void main(String [] args) {
		new FileDialogTEST();
		
		System.out.println("doon..");
	}

}