跪求：java 如何在button点击后弹出目录路径选择对话框

[elvisleung113]

private JButton getJButton2() {
if (jButton2 == null) {
jButton2 = new JButton();
jButton2.setText("BROWSE");
//static JTextField TextField;
//static interf testFrame;
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
System.out.println("actionPerformed()"); // TODO Auto-generated Event stub actionPerformed()
//static JTextField TextField;
//static interf testFrame;
JFileChooser chooser = new JFileChooser("./");
FileNameExtensionFilter filter = new FileNameExtensionFilter("");
chooser.setFileFilter(filter);
testFrame = new interf();
TextField = new JTextField("");
int returnVal = chooser.showOpenDialog(testFrame);
if(returnVal == JFileChooser.APPROVE_OPTION){
TextField.setText(chooser.getSelectedFile().getAbsolutePath());
}
}
}
);
Container contentPane = testFrame.getContentPane();
contentPane.setLayout(new FlowLayout());

}
return jButton2;
}
以上是我自己写的，那位高手帮忙看看了，运行不了。

[茫茫大海]

这点代码怎么看啊？？？

[softroad]

    JFileChooser chooser = new JFileChooser();
// Note: source for ExampleFileFilter can be found in FileChooserDemo,
    // under the demo/jfc directory in the JDK.
    ExampleFileFilter filter = new ExampleFileFilter();
    filter.addExtension("jpg");
    filter.addExtension("gif");
    filter.setDescription("JPG & GIF Images");
    chooser.setFileFilter(filter);
    int returnVal = chooser.showOpenDialog(parent);
    if(returnVal == JFileChooser.APPROVE_OPTION) {
       System.out.println("You chose to open this file: " +
            chooser.getSelectedFile().getName());
    }

[softroad]

JFileChooser.DIALOG_TYPE_CHANGED_PROPERTY

[softroad]

JFileChooser.setFileSelectionMode

[茫茫大海]

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;


public class MainFrame extends JFrame implements ActionListener {

	private JButton button;
	private JFileChooser fileChooser;
	
	public MainFrame() {
		button = new JButton("浏览");
		button.addActionListener(this);
		fileChooser = new JFileChooser("./");
		
		this.add(button,BorderLayout.NORTH);
		
		this.setSize(800, 600);
		this.setVisible(true);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
	
	
	
	public void actionPerformed(ActionEvent e) {
		fileChooser.showOpenDialog(this);
	}
	
	public static void main(String[] args) {
		new MainFrame();
	}
	
}

[softroad]

JFileChooser.DIRECTORIES_ONLY
指示仅显示目录。

[24K純帥]

void chooseButtonDirectory_actionPerformed(ActionEvent e) {
try {
JFileChooser fileChooser = new JFileChooser();
fileChooser.setFileSelectionMode(fileChooser.DIRECTORIES_ONLY);
System.out.println( "here is directories ");

int n = fileChooser.showOpenDialog(this.getContentPane());
if (n == fileChooser.APPROVE_OPTION)
{

textFieldFileLocalDirectory.setText(fileChooser.getSelectedFile().getPath());

}
} catch (Exception ex) {
ex.printStackTrace();
}

}

[xiaoxiong5227]

JFileChooser jfc = new JFileChooser();
		//System.out.println("choose done");
		jfc.setFileSelectionMode(0);//设定只能选择到文件
		int state = jfc.showOpenDialog(null);//此句是打开文件选择器界面的触发语句
		if (state == 1) {
			return;//撤销则返回
		} else {
			File f = jfc.getSelectedFile();//f为选择到的文件
			jTextField1.setText(f.getAbsolutePath());
		}