输入目录显示文件(夹)（界面不是很好看）

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.io.File;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class 目录查找 {
protected static final String LINE_SEPARATOR = System
.getProperty("line.separator");

public 目录查找(JFrame f) {
final JTextField text = new JTextField(30);
final JButton b = new JButton("确定");
final JTextArea area = new JTextArea();
f.setTitle("查找目录下的文件");
f.setBounds(100, 100, 500, 500);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
JPanel p1 = new JPanel();
p1.add(text);
p1.add(b);
f.add(p1, BorderLayout.NORTH);
f.add(new JScrollPane(area), BorderLayout.CENTER);
area.setEditable(false);
b.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent arg0) {
String str_dir = text.getText();
File file = new File(str_dir);
if (file.exists() && file.isDirectory()) {
area.setText(null);
String[] name = file.list();
for (String s : name)
area.append(s + LINE_SEPARATOR);
}
}
});
text.addKeyListener(new KeyAdapter() {

@Override
public void keyPressed(KeyEvent arg0) {
if (arg0.getKeyChar() == KeyEvent.VK_ENTER) {
b.doClick();
}
}

});
}

public static void main(String[] args) {
目录查找 f = new 目录查找(new JFrame());
}

}

输入目录显示文件(夹)（界面不是很好看）

原文：http://www.cnblogs.com/jamsbwo/p/4109107.html