java - 使用其他类中的 JFileChooser 选择文件-6ren

java - 使用其他类中的 JFileChooser 选择文件

转载作者：行者123 更新时间：2023-11-30 03:57:43

我有两个类，一类用于 io/reading 文件，另一类用于 GUI，在过去的几天里，我正在研究 io/reading 类，我使用简单的技术通过写入从硬盘获取文件文件名仅作为字符串注意:查看代码，但是现在在我完成 io/reading 代码后，我需要使用更专业的方式添加 JFileChooser在 Gui 类中并将它们结合起来，这就是困难，有人可以告诉我怎么做吗？

Jfilechooser GUI 类中的 constrictor 内的代码只会打开 JFileChooser并选择文件并将文件保存到String srtPath .

 Action openAction = new AbstractAction("Open Subtitle", openIcon) {
            @Override
            public void actionPerformed(ActionEvent e) {
                ourFileSelector.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
                ourFileSelector.showSaveDialog(null);
                ourSrtFile = ourFileSelector.getSelectedFile();
                srtPath = ourSrtFile.getAbsolutePath();

            }
        };

读取文件的所有类

       package AnimeAid;

import java.io.*;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ReadFile {

public static ArrayList<String> getFileStartingTime(String file){   
   ArrayList<String> Lines = new ArrayList<String>();
        //String file = "tra.srt";
        BufferedReader br = null;
        try {

            br = new BufferedReader(new FileReader(file));

            String line;

            while((line = br.readLine()) != null) {
        if (line.indexOf(':') != -1 && line.indexOf(',') != -1 && line.indexOf('0') != -1) { 
        Lines.add(line.substring(0, 12));
        }
        }
        }catch(IOException ex){
        System.err.println(ex);
        }

         return Lines;
}

public static ArrayList<String> getFileEndingTime(String file){   
     ArrayList<String> Lines = new ArrayList<String>();
        //String file = "tra.srt";
        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader(file));
            String line;
            while((line = br.readLine()) != null) {
        if (line.indexOf(':') != -1 && line.indexOf(',') != -1 && line.indexOf('0') != -1) { 
            Lines.add(line.substring(18, 29));
        }
        }
        }catch(IOException ex){
        System.err.println(ex);
        }

         return Lines;

}




public static ArrayList<String> readSubtitles(String file)
{
     ArrayList<String> Lines = new ArrayList<String>();
    try{

        //String file = "tra.srt";
        Charset charset = Charset.defaultCharset();
        Path path = Paths.get(file);

        byte[] encoded = Files.readAllBytes(path);
        String data = charset.decode(ByteBuffer.wrap(encoded)).toString();

        Pattern p =  Pattern.compile("(\\d+:\\d+:\\d+,\\d+) --> (\\d+:\\d+:\\d+,\\d+)\\s*(.*?)\\s*(^$|\\Z)", Pattern.DOTALL | Pattern.MULTILINE);
        Matcher m = p.matcher(data);

        while (m.find()){
            //String startTime = m.group(1);
            //String endTime = m.group(2);
            //String subtitle = m.group(3);
            Lines.add(m.group(3));
            //System.out.println(startTime);
            //System.out.println(endTime);
        }
    }catch(IOException ex){
    System.err.println(ex);
    }
    return Lines;     
}

 public static ArrayList<String> ArraylineLengths(String file) {
        ArrayList<String> Lines = new ArrayList<String>();
        //String file = "tra.srt";
        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader(file));

            String line;

            while((line = br.readLine()) != null) {
                    line = line.replace("\uFEFF", "");
                if(isInteger(line)) {
                    int i = Integer.parseInt(line);
                    if(i > 0) {
                        Lines.add(line);

                    }
                }
            }

        } catch(IOException ioe) {
            ioe.printStackTrace();
        } finally {
            if(br != null) {
                try {
                    br.close();
                } catch(IOException e) {
                    // do nothing
                }
            }
        }
        return (Lines);

    }

 public static boolean isInteger(String s) {
    try { 
        Integer.parseInt(s); 
    } catch(NumberFormatException e) { 
        return false; 
    }
    // only got here if we didn't return false
    return true;
}

  public static int maxLine(String file){
    try
        {

            //String file = "tra.srt";
            int max = 0;
            BufferedReader br = null;
            try  { br = new BufferedReader(new FileReader(file)); }
            catch (FileNotFoundException e) { System.out.println(e); }

            String line;
            while((line = br.readLine()) != null)
            {
                if (isInteger(line))
                {

                    max++;
                }
            }
              return max+1;
        }
        catch(  NumberFormatException | IOException ex) {ex.printStackTrace();}
        return 0;


 }


}

答案应该是这样的

String file = GuiInterface.srtPath;

我尝试过这个

    public class ReadFile {
GuiInterface tt = new GuiInterface(null);
public static String file = GuiInterface.srtPath;
public static ArrayList<String> getFileStartingTime(){   
   ArrayList<String> Lines = new ArrayList<String>();
        //String file = "tra.srt";
        BufferedReader br = null;
        try {

            br = new BufferedReader(new FileReader(file));

            String line;

            while((line = br.readLine()) != null) {
        if (line.indexOf(':') != -1 && line.indexOf(',') != -1 && line.indexOf('0') != -1) { 
        Lines.add(line.substring(0, 12));
        }
        }
        }catch(IOException ex){
        System.err.println(ex);
        }

         return Lines;
}

但是当我使用这个vlcj库时只显示视频。

这是我向 Jtable 添加数据的方式

     /*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package AnimeAid;



import com.sun.jna.Native;
import com.sun.jna.NativeLibrary;
import java.awt.*;
import java.awt.event.*;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.BorderFactory.*;
import javax.swing.border.*;
import uk.co.caprica.vlcj.binding.LibVlc;
import uk.co.caprica.vlcj.player.MediaPlayerFactory;
import uk.co.caprica.vlcj.player.embedded.EmbeddedMediaPlayer;
import uk.co.caprica.vlcj.runtime.RuntimeUtil;




/**
 *
 * @author isslam
 */
public class GuiInterface extends JFrame {

    JComboBox laList;  
    ReadFile reader;
    private final int numberOfButton = 6;
    private final JTable table;
    JToolBar toolBar;
    private final JTextField enterText,startTime,endTime;
    private final JMenu jMenu1,jMenu2,jMenu3;
    private final JMenuBar jMenuBar1;
    private final JMenuItem itemNewSrt,itemOpenVideo,itemSavefile;
    private static JFileChooser ourFileSelector,ourVideoSelector;
    File ourVideoFile,ourSrtFile;
    Border Campound,empty,Boveld,etch;
    private final JLabel startTimeingLable,endTimeingLabel;
    public static String  mediaPath="",srtPath="";
    Canvas c;
    ImageIcon[] icon;
    JButton[] Obutton;
   static final int COLUMN = 4 ; 



         public static void main(String[] args) throws IOException 
       {
           //ReadFile.readSubtitles();
        NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), "C:\\Program Files\\VideoLAN\\VLC");
        Native.loadLibrary(RuntimeUtil.getLibVlcLibraryName(), LibVlc.class);
          SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new GuiInterface("");

            }

        });

}



    public GuiInterface(String title){

    //reader = new ReadFile();

    setSize(1024, 720);
    setVisible(true);
    setTitle("AnimeFactor");
    setDefaultCloseOperation(GuiInterface.EXIT_ON_CLOSE);
    //video setting 
    MediaPlayerFactory mediaPlayerFactory = new MediaPlayerFactory();
    c = new Canvas();
    String[] petStrings = { "Translation Line", "Both Line" };
    laList = new JComboBox(petStrings);
    c.setBackground(Color.black);
    JPanel p = new JPanel();
    p.setLayout(new BorderLayout());
    p.add(c, BorderLayout.CENTER);
    add(p, BorderLayout.CENTER);
    EmbeddedMediaPlayer mediaPlayer = mediaPlayerFactory.newEmbeddedMediaPlayer();
    mediaPlayer.setVideoSurface(mediaPlayerFactory.newVideoSurface(c));
    mediaPlayer.playMedia("C:\\Users\\isslam\\Downloads\\gg.mp4");

   /* String[] columnNames = {"#","Start","End","Translation column"};

    Object[][] data = new Object [ReadFile.maxLine(srtPath)][COLUMN];
    ArrayList <String > Dumy = new ArrayList<String>();

   //String [] countries = list.toArray(new String[list.size()]);

   Dumy = ReadFile.ArraylineLengths(srtPath);


    for(int i = 0; i < Dumy.size(); i++) 
    {
    data[i][0]  = Dumy.get(i);
    }

    ArrayList<String> ends = ReadFile.getFileEndingTime(srtPath);
    ArrayList<String> starts = ReadFile.getFileStartingTime(srtPath);
    ArrayList<String> subs = ReadFile.readSubtitles(srtPath);
    for(int i=0;i < ReadFile.maxLine(srtPath);i++){ 
         // data[i][0] = ReadFile.lineLengths();
            data[i][1] = starts.get(i) ;
            data[i][2] = ends.get(i);
            data[i][3] = subs.get(i);

    } 
  DefaultTableModel model = new DefaultTableModel(data, columnNames);
 */

    ImageIcon openIcon = new ImageIcon(
                GuiInterface.class.getResource("/resources/image/folder-icon.png"));
        ImageIcon saveIcon = new ImageIcon(
                GuiInterface.class.getResource("/resources/image/red-disk-icon.png"));
        ImageIcon newIcon = new ImageIcon(
                GuiInterface.class.getResource("/resources/image/Actionsnew-icon.png"));






        Action saveAction = new AbstractAction("Save", saveIcon) {
            @Override
            public void actionPerformed(ActionEvent e) {

            }
        };
        Action newAction = new AbstractAction("New", newIcon) {
            @Override
            public void actionPerformed(ActionEvent e) {
                System.out.println("New File");
            }
        };
    jMenu1 = new JMenu("File");
    jMenu2 = new JMenu("Video");
    jMenu3 = new JMenu("Subtitle");
    itemNewSrt = new JMenuItem(newAction);
    jMenu1.add(itemNewSrt);


    itemSavefile = new JMenuItem(saveAction);
    jMenu1.add(itemSavefile);
    jMenuBar1 = new JMenuBar();
    jMenuBar1.setBorder(etch);
    setJMenuBar(jMenuBar1);
    jMenuBar1.add(jMenu1);
    jMenuBar1.add(jMenu2);
    jMenuBar1.add(jMenu3);
     table = new JTable();
     table.setFillsViewportHeight(true);
     table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
     TableColumn columnA = table.getColumn("#");
      columnA.setMinWidth(10);
      columnA.setMaxWidth(40);
      TableColumn columnB= table.getColumn("Start");
      columnB.setMinWidth(80);
      columnB.setMaxWidth(90);
      TableColumn columnC= table.getColumn("End");
      columnC.setMinWidth(80);
      columnC.setMaxWidth(90);
    Obutton = new JButton[numberOfButton];
    etch = BorderFactory.createEtchedBorder();
    enterText = new JTextField();
    enterText.setPreferredSize(new Dimension(0,100));
    ourFileSelector = new JFileChooser();
    startTime = new JTextField();
    startTime.setPreferredSize(new Dimension(120, 20));
    startTimeingLable = new JLabel("Starting Time");
    endTimeingLabel = new JLabel("Ending Time");
    endTime = new JTextField();
    endTime.setPreferredSize(new Dimension(120, 20));
    toolBar = new JToolBar();
        //toolBar.add(Box.createHorizontalGlue());
        toolBar.setBorder(new LineBorder(Color.LIGHT_GRAY, 1));
        toolBar.add(newAction);
        toolBar.add(saveAction);


        JPanel toolBarPane = new JPanel(new BorderLayout());
        toolBarPane.add(toolBar,BorderLayout.NORTH);

        JPanel timing = new JPanel(new FlowLayout(FlowLayout.TRAILING));
        timing.add(startTimeingLable);
        timing.add(startTime);
        timing.add(endTimeingLabel);
        timing.add(endTime);
        timing.add(laList);

        empty = BorderFactory.createEmptyBorder(30, 5, 5, 5);
        Boveld = BorderFactory.createBevelBorder(BevelBorder.RAISED);
        Campound = BorderFactory.createCompoundBorder(empty,Boveld);


        JPanel textFiled = new JPanel(new BorderLayout());
        textFiled.add(timing);
        textFiled.add(enterText,BorderLayout.SOUTH);
        textFiled.setBorder(Campound);

        JScrollPane scrollPane = new JScrollPane(table);
        add(scrollPane, BorderLayout.SOUTH);
        add(textFiled, BorderLayout.EAST);
        add(toolBarPane,BorderLayout.PAGE_START);

         Action openAction = new AbstractAction("Open Subtitle", openIcon) {
            @Override
            public void actionPerformed(ActionEvent e) {
                ourFileSelector.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
                ourFileSelector.showSaveDialog(null);
                ourSrtFile =  ourFileSelector.getSelectedFile();
                srtPath = ourSrtFile.getAbsolutePath();
                DefaultTableModel model = createModel(srtPath);
                table.setModel(model);


            }
        };

        //Container cp = getContentPane();
       toolBar.add(openAction);
       itemOpenVideo = new JMenuItem(openAction);
       jMenu1.add(itemOpenVideo);
       itemOpenVideo.addActionListener(new MenuBarMethod());

    }

    private DefaultTableModel createModel(String srtPath) {
        String[] columnNames = {"#", "Start", "End", "Translation column"};

        int maxLine = ReadFile.maxLine(srtPath);  // debug
        //Object[][] data = new Object[maxLine][];
        System.out.println(maxLine);  // debug

        DefaultTableModel model = new DefaultTableModel(columnNames, 0);

        ArrayList<String> ends = ReadFile.getFileEndingTime(srtPath);
        ArrayList<String> starts = ReadFile.getFileStartingTime(srtPath);
        ArrayList<String> subs = ReadFile.readSubtitles(srtPath);
        for (int i = 0; i < ReadFile.maxLine(srtPath) - 1; i++) {
            model.addRow(new Object[] {starts.get(i), ends.get(i), subs.get(i)});
        }


        return model;
    }

public class MenuBarMethod implements ActionListener{

    @Override
    public void actionPerformed(ActionEvent a){
        Object buttonPressed=a.getSource();
       if(buttonPressed.equals(itemOpenVideo)){
        ourVideoSelector.setFileSelectionMode(JFileChooser.FILES_ONLY);
        ourVideoSelector.showSaveDialog(null);
        ourVideoFile = ourVideoSelector.getSelectedFile();
        mediaPath = ourVideoFile.getAbsolutePath();
       }
    }

}

}

代码的问题是这部分代码不起作用

 table = new JTable();
 table.setFillsViewportHeight(true);
 table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
 TableColumn columnA = table.getColumn("#");
  columnA.setMinWidth(10);
  columnA.setMaxWidth(40);
  TableColumn columnB= table.getColumn("Start");
  columnB.setMinWidth(80);
  columnB.setMaxWidth(90);
  TableColumn columnC= table.getColumn("End");
  columnC.setMinWidth(80);
  columnC.setMaxWidth(90);

文件的一部分

    1
00:00:01,600 --> 00:00:04,080
<b>Mr Magnussen, please state your
full name for the record.</b>

2
00:00:04,080 --> 00:00:07,040
Charles Augustus Magnussen.

现在这是应用程序的图片 application

如您所见，由于某种原因，打开文件进行读取的图标不存在，JTextFiled 下的白色背景表明 jtable 已创建，但还没有任何信息

最佳答案

"The answer should be something like this"
String file = GuiInterface.srtPath;

您的GuiInterface是正在运行的类。由于 ReadFile 是一个具有 static 方法的“帮助类”，因此它不必了解有关 GuiInterface 类。

您应该做的是让 getFileStartingTime() 接受一个 String path 参数，并让 FileReader 使用该 路径参数。

public static ArrayList<String> getFileStartingTime(String path) {
    ArrayList<String> Lines = new ArrayList<String>();
    BufferedReader br = null;
    try {
        br = new BufferedReader(new FileReader(path));

然后，当您应该从 Action 调用 ReadFile.getFileStartTime(...) 时，并对返回的 ArrayList 执行某些操作。类似的东西

    File ourSrtFile = ourFileSelector.getSelectedFile();
    String srtPath = ourSrtFile.getAbsolutePath();
    ArrayList<String> array = ReadFile.getFileStartingTime(srtPath);
    DefaultListModel model = (DefaultListModel) list.getModel();
    for (String s : array) {
         model.addElement(s);
    }

<小时/>

这是一个完整的示例。但请注意:读取文件(和长时间运行的任务)应该在后台线程中完成，可能使用 SwingWorker ，但我现在懒得这么做。你可以看一下链接

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.SwingUtilities;

public class GuiInterface {

    private JFileChooser ourFileSelector = new JFileChooser();
    private JList list = new JList(new DefaultListModel());

    public GuiInterface() {
        Action openAction = new AbstractAction("Open Subtitle") {
            @Override
            public void actionPerformed(ActionEvent e) {
                ourFileSelector.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
                ourFileSelector.showSaveDialog(null);
                File ourSrtFile = ourFileSelector.getSelectedFile();
                String srtPath = ourSrtFile.getAbsolutePath();
                ArrayList<String> array = ReadFile.getFileStartingTime(srtPath);
                DefaultListModel model = (DefaultListModel) list.getModel();
                for (String s : array) {
                    model.addElement(s);
                }
            }
        };
        JButton button = new JButton(openAction);
        JFrame frame = new JFrame();
        JScrollPane scroll = new JScrollPane(list);
        scroll.setPreferredSize(new Dimension(200, 300));
        frame.add(scroll);
        frame.add(button, BorderLayout.SOUTH);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] aregs) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new GuiInterface();
            }

        });
    }
}

class ReadFile {

    public static ArrayList<String> getFileStartingTime(String path) {
        ArrayList<String> Lines = new ArrayList<String>();
        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader(path));

            String line;

            while ((line = br.readLine()) != null) {
                Lines.add(line);
            }
        } catch (IOException ex) {
            System.err.println(ex);
        }

        return Lines;
    }
}

<小时/>

编辑

现在就试试这个

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;

public class GuiInterface {

    private JFileChooser ourFileSelector = new JFileChooser();
    private JTable table = new JTable();

    public GuiInterface() {
        Action openAction = new AbstractAction("Open Subtitle") {
            @Override
            public void actionPerformed(ActionEvent e) {
                ourFileSelector.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
                ourFileSelector.showSaveDialog(null);
                File ourSrtFile = ourFileSelector.getSelectedFile();
                String srtPath = ourSrtFile.getAbsolutePath();
                DefaultTableModel model = createModel(srtPath);
                table.setModel(model);
            }
        };
        JButton button = new JButton(openAction);
        JFrame frame = new JFrame();
        JScrollPane scroll = new JScrollPane(table);
        //scroll.setPreferredSize(new Dimension(200, 300));
        frame.add(scroll);
        frame.add(button, BorderLayout.SOUTH);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }

    private DefaultTableModel createModel(String srtPath) {
        String[] columnNames = {"#", "Start", "End", "Translation column"};

        int maxLine = ReadFile.maxLine(srtPath);  // debug
        //Object[][] data = new Object[maxLine][];
        System.out.println(maxLine);  // debug

        DefaultTableModel model = new DefaultTableModel(columnNames, 0);

        ArrayList<String> ends = ReadFile.getFileEndingTime(srtPath);
        ArrayList<String> starts = ReadFile.getFileStartingTime(srtPath);
        ArrayList<String> subs = ReadFile.readSubtitles(srtPath);
        for (int i = 0; i < ReadFile.maxLine(srtPath) - 1; i++) {
            model.addRow(new Object[] {starts.get(i), ends.get(i), subs.get(i)});
        }


        return model;
    }

    public static void main(String[] aregs) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new GuiInterface();
            }

        });
    }
}

class ReadFile {

    public static ArrayList<String> getFileStartingTime(String file) {
        ArrayList<String> Lines = new ArrayList<String>();
        //String file = "tra.srt";
        BufferedReader br = null;
        try {

            br = new BufferedReader(new FileReader(file));

            String line;

            while ((line = br.readLine()) != null) {
                if (line.indexOf(':') != -1 && line.indexOf(',') != -1 && line.indexOf('0') != -1) {
                    Lines.add(line.substring(0, 12));
                }
            }
        } catch (IOException ex) {
            System.err.println(ex);
        }

        return Lines;
    }

    public static ArrayList<String> getFileEndingTime(String file) {
        ArrayList<String> Lines = new ArrayList<String>();
        //String file = "tra.srt";
        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader(file));
            String line;
            while ((line = br.readLine()) != null) {
                if (line.indexOf(':') != -1 && line.indexOf(',') != -1 && line.indexOf('0') != -1) {
                    Lines.add(line.substring(18, 29));
                }
            }
        } catch (IOException ex) {
            System.err.println(ex);
        }

        return Lines;

    }

    public static ArrayList<String> readSubtitles(String file) {
        ArrayList<String> Lines = new ArrayList<String>();
        try {

            //String file = "tra.srt";
            Charset charset = Charset.defaultCharset();
            Path path = Paths.get(file);

            byte[] encoded = Files.readAllBytes(path);
            String data = charset.decode(ByteBuffer.wrap(encoded)).toString();

            Pattern p = Pattern.compile("(\\d+:\\d+:\\d+,\\d+) --> (\\d+:\\d+:\\d+,\\d+)\\s*(.*?)\\s*(^$|\\Z)", Pattern.DOTALL | Pattern.MULTILINE);
            Matcher m = p.matcher(data);

            while (m.find()) {
                //String startTime = m.group(1);
                //String endTime = m.group(2);
                //String subtitle = m.group(3);
                Lines.add(m.group(3));
                //System.out.println(startTime);
                //System.out.println(endTime);
            }
        } catch (IOException ex) {
            System.err.println(ex);
        }
        return Lines;
    }

    public static ArrayList<String> ArraylineLengths(String file) {
        ArrayList<String> Lines = new ArrayList<String>();
        //String file = "tra.srt";
        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader(file));

            String line;

            while ((line = br.readLine()) != null) {
                line = line.replace("\uFEFF", "");
                if (isInteger(line)) {
                    int i = Integer.parseInt(line);
                    if (i > 0) {
                        Lines.add(line);

                    }
                }
            }

        } catch (IOException ioe) {
            ioe.printStackTrace();
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    // do nothing
                }
            }
        }
        return (Lines);

    }

    public static boolean isInteger(String s) {
        try {
            Integer.parseInt(s);
        } catch (NumberFormatException e) {
            return false;
        }
        // only got here if we didn't return false
        return true;
    }

    public static int maxLine(String file) {
        try {

            //String file = "tra.srt";
            int max = 0;
            BufferedReader br = null;
            try {
                br = new BufferedReader(new FileReader(file));
            } catch (FileNotFoundException e) {
                System.out.println(e);
            }

            String line;
            while ((line = br.readLine()) != null) {
                if (isInteger(line)) {

                    max++;
                }
            }
            return max + 1;
        } catch (NumberFormatException | IOException ex) {
            ex.printStackTrace();
        }
        return 0;

    }

}

关于java - 使用其他类中的 JFileChooser 选择文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22716160/

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java - 使用其他类中的 JFileChooser 选择文件