代码：
package unitTwelve;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileFilter;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* 描述:显示指定类型的文件
* 作者: ChengShanyunduo
* 创建日期: 2017-07-07
* 修改记录:
*/
public class FilesList extends JFrame{
JFrame jFrame = new JFrame();
JPanel jPanel1 = new JPanel();
JPanel jPanel2 = new JPanel();
JLabel label = new JLabel("输入文件扩展名：");
JTextField jTextField = new JTextField();
JButton button = new JButton("选择文件夹");
String[] columnNames = {"文件名","文件大小","修改时间"};
String[][]data=new String[0][3];
DefaultTableModel model = new DefaultTableModel(data,columnNames);
JTable jTable = new JTable(model);
JScrollPane scroll = new JScrollPane(jTable);
FilesList(){
jPanel1.setLayout(new GridLayout(1,3));
jPanel1.setSize(450,30);
jTextField.setSize(150,30);
jPanel1.add(label);
jPanel1.add(jTextField);
jPanel1.add(button);
//监听
button.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
do_button_actionPerformed(e);
}
});
jFrame.setLayout(new FlowLayout());
jFrame.add(jPanel1);
jFrame.add(scroll);
jFrame.setSize(500,500);
jFrame.setVisible(true);
}
protected void do_button_actionPerformed(ActionEvent e){
//获取text中内容
final String fileType = jTextField.getText();
//如果为空。弹出提醒
if (fileType.isEmpty()){
JOptionPane.showMessageDialog(this,"请输入文件类型","",JOptionPane.WARNING_MESSAGE);
return;
}
//文件选择器
JFileChooser chooser = new JFileChooser();
//只能选择文件夹
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
//禁止选择多个文件夹
chooser.setMultiSelectionEnabled(false);
//打开文件选择器
int result = chooser.showOpenDialog(this);
if (result == JFileChooser.APPROVE_OPTION){
//获得相同类型的文件
File[] listFiles = chooser.getSelectedFile().listFiles(new FileFilter(){
@Override
public boolean accept(File pathname){
if (pathname.getName().endsWith(fileType)){
return true;
}else{
return false;
}
}
});
DefaultTableModel model = (DefaultTableModel) jTable.getModel();
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
//遍历File数组
for (File file : listFiles){
String name = file.getName();
long size = file.length();
String modifyDate = format.format(new Date(file.lastModified()));
model.addRow(new String[]{name,""+size,modifyDate});
}
jTable.setModel(model);
}
}
public static void main(String[] args){
FilesList a = new FilesList();
}
}
结果：
