本文介绍了如何使用文本文件中的数据集在 Java 中绘制折线图?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我编写了一个 Java GUI 程序,它打开一个文本文件并读取左侧面板中的数据.现在我想在右侧面板上显示从同一文件读取的数据的图形.

我已经使用 JFileChooser 打开文件并读取数据并将它们显示在文本区域上.我希望使用二维 X-Y 图显示从文件中读取的数据.应使用数据文件中指定的标签信息标记图形的轴.X 轴上的值应从指定的 x 轴起始值开始,间隔以由 x 轴间隔值确定的速率递增.Y 轴上的值需要根据数据本身确定.图中绘制的每个点都应使用单线连接.

我使用了几种方法,但都没有奏效.我尝试将文本文件中的每一行作为数组读取,并将数组用作数据集,但效果不佳.请帮我根据文本文件中的数据绘制图表.任何帮助,将不胜感激.谢谢.

P.S 该图应仅使用 AWT/Swing 库绘制.

文件上的数据如下:

标题:年龄对能力的影响Xlabel:年龄Ylabel:能力开始:0间隔:150, 3, 4.2, 7, 5.1, 10, 3.2

以下是我迄今为止编写的代码:

import java.awt.BorderLayout;导入 java.awt.Dimension;导入 java.awt.Font;导入 java.awt.GridLayout;导入 java.awt.List;导入 java.awt.TextArea;导入 java.awt.event.ActionEvent;导入 java.awt.event.ActionListener;导入 java.awt.event.KeyEvent;导入 java.awt.event.KeyListener;导入 java.io.BufferedReader;导入 java.io.File;导入 java.io.FileNotFoundException;导入 java.io.FileReader;导入 java.io.IOException;导入 java.io.InputStreamReader;导入 java.math.BigDecimal;导入 java.util.ArrayList;导入 java.util.Scanner;导入 javax.swing.BorderFactory;导入 javax.swing.ImageIcon;导入 javax.swing.JFileChooser;导入 javax.swing.JFrame;导入 javax.swing.JLabel;导入 javax.swing.JMenu;导入 javax.swing.JMenuBar;导入 javax.swing.JMenuItem;导入 javax.swing.JOptionPane;导入 javax.swing.JPanel;导入 javax.swing.JScrollPane;导入 javax.swing.JSplitPane;导入 javax.swing.JTextArea;导入 javax.swing.event.MenuEvent;导入 javax.swing.event.MenuListener;导入 org.jfree.chart.ChartFactory;导入 org.jfree.chart.ChartPanel;导入 org.jfree.chart.JFreeChart;导入 org.jfree.chart.plot.PlotOrientation;导入 org.jfree.data.general.DefaultPieDataset;导入 org.jfree.data.xy.XYSeries;导入 org.jfree.data.xy.XYSeriesCollection;@SuppressWarnings("串行")公共类 GUI 扩展 JFrame {private String[] readLines = new String[6];公共图形用户界面(){//设置标题、大小和布局setTitle("数据可视化工具");setSize(950, 1000);setLayout(new BorderLayout());//为 JFrame 创建一个菜单栏final JMenuBar menuBar = new JMenuBar();//将菜单栏添加到框架中setJMenuBar(menuBar);//定义并添加两个下拉菜单到菜单栏,文件"和帮助"JMenu fileMenu = new JMenu("File");JMenu helpMenu = new JMenu("Help");menuBar.add(fileMenu);menuBar.add(helpMenu);//将菜单项和图标添加到文件"下拉菜单中,final JMenuItem openAction = new JMenuItem("Open", new ImageIcon("images/Open-icon.png"));final JMenuItem saveAction = new JMenuItem("Save", new ImageIcon("images/save-file.png"));final JMenuItem exitAction = new JMenuItem("Exit", new ImageIcon("images/exit-icon.png"));final JMenuItem aboutAction = new JMenuItem("About", new ImageIcon("images/about-us.png"));///////////////////////////////////////////////////////////////////////////////////////////////创建一个文本区域.final JTextArea textArea = new JTextArea("");textArea.setFont(new Font("Serif", Font.BOLD, 16));textArea.setLineWrap(true);textArea.setWrapStyleWord(true);textArea.setEditable(false);JScrollPane textScrollPane = new JScrollPane(textArea);//textArea.add(textScrollPane, BorderLayout.CENTER);//添加//JScrollPane 到面板//滚动条textScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_​​ALWAYS);textScrollPane.setHorizo​​ntalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_​​ALWAYS);textScrollPane.setPreferredSize(new Dimension(350, 550));textScrollPane.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("Textual Representation"),BorderFactory.createEmptyBorder(5, 5, 5, 5)));//创建一个图形窗格.JPanel graphicsArea = new JPanel();//graphicsArea.setFont(new Font("Serif", Font.BOLD, 16));JScrollPane graphicsScrollPane = new JScrollPane(graphicsArea);//滚动条graphicsScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_​​ALWAYS);graphicsScrollPane.setHorizo​​ntalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_​​ALWAYS);graphicsScrollPane.setPreferredSize(new Dimension(550, 550));graphicsScrollPane.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("图形表示"),BorderFactory.createEmptyBorder(5, 5, 5, 5)));//将图形窗格和文本窗格放在一个拆分窗格中.JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, textScrollPane, graphicsScrollPane);splitPane.setOneTouchExpandable(true);splitPane.setResizeWeight(0.5);JPanel rightPane = new JPanel(new GridLayout(1, 0));rightPane.add(splitPane);//把所有东西放在一起.JPanel leftPane = new JPanel(new BorderLayout());添加(右窗格,BorderLayout.LINE_END);//////////////////////////////////////////////////////////////////////////////////////////////////////////////文件菜单快捷方式fileMenu.setMnemonic(KeyEvent.VK_F);fileMenu.add(openAction);//openAction.addActionListener(this);openAction.addActionListener(new ActionListener() {公共无效动作执行(ActionEvent arg0){如果 (arg0.getSource().equals(openAction)) {//使用 JFileChooser 打开文本文件JFileChooser fileChooser = new JFileChooser();if (fileChooser.showOpenDialog(fileChooser) == JFileChooser.APPROVE_OPTION) {//fileChooser.setCurrentDirectory(new//File(System.getProperty("user.home")));//环境//当前的//目录文件文件 = fileChooser.getSelectedFile();BufferedReader br = null;尝试 {//FileReader fr = new FileReader(file);扫描仪 f = 新扫描仪(文件);for (int i = 0; i <6; i++) {readLines[i] = f.nextLine();textArea.setText(textArea.getText() + readLines[i] + "
");String array[] = readLines[i].split(" ");}} catch (FileNotFoundException e) {JOptionPane.showMessageDialog(new JFrame(), "找不到文件!", "错误!",JOptionPane.ERROR_MESSAGE);//错误信息//如果文件不是//成立} catch (NullPointerException e) {//System.out.println(e.getLocalizedMessage());} 最后 {如果(br != null){尝试 {br.close();} catch (IOException e) {e.printStackTrace();}}}}}}});fileMenu.add(saveAction);fileMenu.add(exitAction);//退出按钮快捷键exitAction.setMnemonic(KeyEvent.VK_X);exitAction.addActionListener(new ActionListener() {//设置退出按钮公共无效动作执行(ActionEvent arg0){如果 (arg0.getSource().equals(exitAction)) {System.exit(0);}}});fileMenu.addSeparator();helpMenu.addSeparator();helpMenu.add(aboutAction);//关于按钮快捷键aboutAction.setMnemonic(KeyEvent.VK_A);aboutAction.addActionListener(new ActionListener() {//点击关于按钮打开一个对话框,其中包含//关于程序的信息公共无效动作执行(ActionEvent arg0){JOptionPane.showMessageDialog(menuBar.getComponent(0),"该程序基于数据可视化工具的开发.
"+ "基本概念是制作一个读取原始文本数据的软件,
"+ "分析该数据,然后以图形方式将其呈现给用户.","关于我们", JOptionPane.PLAIN_MESSAGE);}});}}
解决方案

从你的例子开始,注意以下几点:

  • 为您的 graphicsArea 使用 ChartPanel;然后,您的 openAction() 可以简单地调用 setChart().

  • creatChart()中解析选中的文件;显示了标题和数据行,但其余属性留作练习.

  • 考虑使用

    import java.awt.BorderLayout;导入 java.awt.EventQueue;导入 java.awt.Font;导入 java.awt.event.ActionEvent;导入 java.awt.event.ActionListener;导入 java.awt.event.KeyEvent;导入 java.io.BufferedReader;导入 java.io.File;导入 java.io.FileReader;导入 java.io.IOException;导入 javax.swing.BorderFactory;导入 javax.swing.ImageIcon;导入 javax.swing.JFileChooser;导入 javax.swing.JFrame;导入 javax.swing.JMenu;导入 javax.swing.JMenuBar;导入 javax.swing.JMenuItem;导入 javax.swing.JOptionPane;导入 javax.swing.JScrollPane;导入 javax.swing.JSplitPane;导入 javax.swing.JTextArea;导入 org.jfree.chart.ChartFactory;导入 org.jfree.chart.ChartPanel;导入 org.jfree.chart.JFreeChart;导入 org.jfree.data.xy.XYSeries;导入 org.jfree.data.xy.XYSeriesCollection;//* @see https://stackoverflow.com/a/36764715/230513 */公共类 GUI 扩展 JFrame {公共图形用户界面(){super("数据可视化器");setDefaultCloseOperation(EXIT_ON_CLOSE);final JMenuBar menuBar = new JMenuBar();setJMenuBar(menuBar);JMenu fileMenu = new JMenu("File");JMenu helpMenu = new JMenu("Help");menuBar.add(fileMenu);menuBar.add(helpMenu);final JMenuItem openAction = new JMenuItem("Open", new ImageIcon("images/Open-icon.png"));final JMenuItem saveAction = new JMenuItem("Save", new ImageIcon("images/save-file.png"));final JMenuItem exitAction = new JMenuItem("Exit", new ImageIcon("images/exit-icon.png"));final JMenuItem aboutAction = new JMenuItem("About", new ImageIcon("images/about-us.png"));最终 JTextArea textArea = new JTextArea(8, 16);textArea.setFont(new Font("Serif", Font.BOLD, 16));textArea.setLineWrap(true);textArea.setWrapStyleWord(true);textArea.setEditable(false);JScrollPane textScrollPane = new JScrollPane(textArea);textScrollPane.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("文本表示"),BorderFactory.createEmptyBorder(5, 5, 5, 5)));ChartPanel graphicsArea = new ChartPanel(null);graphicsArea.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("图形表示"),BorderFactory.createEmptyBorder(5, 5, 5, 5)));JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, textScrollPane, graphicsArea);splitPane.setOneTouchExpandable(true);splitPane.setResizeWeight(0.5);添加(splitPane,BorderLayout.LINE_END);fileMenu.setMnemonic(KeyEvent.VK_F);fileMenu.add(openAction);openAction.addActionListener(new ActionListener() {@覆盖公共无效动作执行(ActionEvent arg0){如果 (arg0.getSource().equals(openAction)) {JFileChooser fileChooser = new JFileChooser(new File("."));if (fileChooser.showOpenDialog(fileChooser) == JFileChooser.APPROVE_OPTION) {文件文件 = fileChooser.getSelectedFile();graphicsArea.setChart(creatChart(file));}}}私人 JFreeChart creatChart(文件文件){字符串标题 = null;字符串 xAxisLabel = null;字符串 yAxisLabel = null;BufferedReader in = null;int 开始 = 0;整数间隔 = 0;字符串数据 = 空;字符串行 = null;尝试 {in = new BufferedReader(new FileReader(file));while ((line = in.readLine()) != null) {textArea.append(line + "
    ");if (line.startsWith("Title")) {title = line.split(":")[1].trim();}//在这里解析其他行if (!line.contains(":")) {数据 = 行;}}} catch (IOException ex) {ex.printStackTrace(System.err);}XYSeries 数据集 = new XYSeries(file.getName());for (String s : data.split(",")) {dataset.add(start, Double.valueOf(s));开始 += 间隔;}返回 ChartFactory.createXYLineChart(title,xAxisLabel, yAxisLabel, new XYSeriesCollection(dataset));}});fileMenu.add(saveAction);fileMenu.add(exitAction);exitAction.setMnemonic(KeyEvent.VK_X);exitAction.addActionListener(new ActionListener() {@覆盖公共无效动作执行(ActionEvent arg0){如果 (arg0.getSource().equals(exitAction)) {System.exit(0);}}});fileMenu.addSeparator();helpMenu.addSeparator();helpMenu.add(aboutAction);aboutAction.setMnemonic(KeyEvent.VK_A);aboutAction.addActionListener(new ActionListener() {@覆盖公共无效动作执行(ActionEvent arg0){JOptionPane.showMessageDialog(null,"可视化工具.","关于我们", JOptionPane.PLAIN_MESSAGE);}});盒();setLocationRelativeTo(null);设置可见(真);}公共静态无效主(字符串 [] args){EventQueue.invokeLater(() -> {新的图形用户界面();});}}

    I have written a Java GUI program which opens a text file and reads the data in the left panel. Now I want to display a graph of the data read from the same file on the right panel.

    I have used JFileChooser to open files and read the data and display them on a text area. I want the data read from the file to be displayed using a two dimensional X-Y graph. The axis of the graph should be labeled using the label information specified in the data file. The values on the X-axis should begin from the x-axis start value specified, with intervals which increment at a rate determined by the x-axis interval value. The values on the Y-axis will need to be determined from the data itself. Each point plotted on the graph should be joined using a single line.

    I have used several methods but none worked. I have tried reading each line on the text file as arrays and use the arrays as the dataset, but it didn't work as well. Please help me plot a graph from the data on the text file. Any help would be appreciated. Thanks.

    P.S The graph should be plotted using AWT/Swing libraries only.

    The data on the file is as follows:

    Title: Effect of Age on Ability
    Xlabel: Age
    Ylabel: Ability
    start: 0
    interval: 15
    0, 3, 4.2, 7, 5.1, 10, 3.2
    

    Following are my code which I have written so far:

    import java.awt.BorderLayout;
    import java.awt.Dimension;
    import java.awt.Font;
    import java.awt.GridLayout;
    import java.awt.List;
    import java.awt.TextArea;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.KeyEvent;
    import java.awt.event.KeyListener;
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileNotFoundException;
    import java.io.FileReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.math.BigDecimal;
    import java.util.ArrayList;
    import java.util.Scanner;
    
    import javax.swing.BorderFactory;
    import javax.swing.ImageIcon;
    import javax.swing.JFileChooser;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JMenu;
    import javax.swing.JMenuBar;
    import javax.swing.JMenuItem;
    import javax.swing.JOptionPane;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JSplitPane;
    import javax.swing.JTextArea;
    import javax.swing.event.MenuEvent;
    import javax.swing.event.MenuListener;
    
    import org.jfree.chart.ChartFactory;
    import org.jfree.chart.ChartPanel;
    import org.jfree.chart.JFreeChart;
    import org.jfree.chart.plot.PlotOrientation;
    import org.jfree.data.general.DefaultPieDataset;
    import org.jfree.data.xy.XYSeries;
    import org.jfree.data.xy.XYSeriesCollection;
    
    @SuppressWarnings("serial")
    public class GUI extends JFrame {
    
        private String[] readLines = new String[6];
    
        public GUI() {
            // Setting Title, size and layout
            setTitle("Data Visualiser");
            setSize(950, 1000);
            setLayout(new BorderLayout());
    
            // Creates a menubar for a JFrame
            final JMenuBar menuBar = new JMenuBar();
    
            // Add the menubar to the frame
            setJMenuBar(menuBar);
    
            // Define and add two drop down menu to the menubar, "file" and "help"
            JMenu fileMenu = new JMenu("File");
            JMenu helpMenu = new JMenu("Help");
            menuBar.add(fileMenu);
            menuBar.add(helpMenu);
    
            // adding menu items and icons to the "file" drop down menu,
            final JMenuItem openAction = new JMenuItem("Open", new ImageIcon("images/Open-icon.png"));
    
            final JMenuItem saveAction = new JMenuItem("Save", new ImageIcon("images/save-file.png"));
    
            final JMenuItem exitAction = new JMenuItem("Exit", new ImageIcon("images/exit-icon.png"));
    
            final JMenuItem aboutAction = new JMenuItem("About", new ImageIcon("images/about-us.png"));
    
            //////////////////////////////////////////////////////////////////////////////////////////////
            // Create a text area.
            final JTextArea textArea = new JTextArea("");
            textArea.setFont(new Font("Serif", Font.BOLD, 16));
            textArea.setLineWrap(true);
            textArea.setWrapStyleWord(true);
            textArea.setEditable(false);
            JScrollPane textScrollPane = new JScrollPane(textArea);
            // textArea.add(textScrollPane, BorderLayout.CENTER); //add the
            // JScrollPane to the panel
    
            // Scrollbars
            textScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
            textScrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
    
            textScrollPane.setPreferredSize(new Dimension(350, 550));
            textScrollPane.setBorder(
                BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("Textual Representation"),
                    BorderFactory.createEmptyBorder(5, 5, 5, 5)));
    
            // Create an graphics pane.
            JPanel graphicsArea = new JPanel();
            //graphicsArea.setFont(new Font("Serif", Font.BOLD, 16));
            JScrollPane graphicsScrollPane = new JScrollPane(graphicsArea);
    
            // Scrollbars
            graphicsScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
            graphicsScrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
    
            graphicsScrollPane.setPreferredSize(new Dimension(550, 550));
            graphicsScrollPane.setBorder(
                BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("Graphical Representation"),
                    BorderFactory.createEmptyBorder(5, 5, 5, 5)));
    
            // Put the graphics pane and the text pane in a split pane.
            JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, textScrollPane, graphicsScrollPane);
            splitPane.setOneTouchExpandable(true);
            splitPane.setResizeWeight(0.5);
    
            JPanel rightPane = new JPanel(new GridLayout(1, 0));
            rightPane.add(splitPane);
    
            // Put everything together.
            JPanel leftPane = new JPanel(new BorderLayout());
            add(rightPane, BorderLayout.LINE_END);
    
            ////////////////////////////////////////////////////////////////////////////////////////////////////////////
            // file menu shortcut
            fileMenu.setMnemonic(KeyEvent.VK_F);
    
            fileMenu.add(openAction);
            // openAction.addActionListener(this);
            openAction.addActionListener(new ActionListener() {
    
                public void actionPerformed(ActionEvent arg0) {
                    if (arg0.getSource().equals(openAction)) {
    
                        // using JFileChooser to open the text file
                        JFileChooser fileChooser = new JFileChooser();
    
                        if (fileChooser.showOpenDialog(fileChooser) == JFileChooser.APPROVE_OPTION) {
                            // fileChooser.setCurrentDirectory(new
                            // File(System.getProperty("user.home"))); // setting
                            // current
                            // directory
                            File file = fileChooser.getSelectedFile();
                            BufferedReader br = null;
    
                            try {
                                // FileReader fr = new FileReader(file);
                                Scanner f = new Scanner(file);
                                for (int i = 0; i < 6; i++) {
                                    readLines[i] = f.nextLine();
                                    textArea.setText(textArea.getText() + readLines[i] + "
    ");
                                    String array[] = readLines[i].split(" ");
    
                                }
                            } catch (FileNotFoundException e) {
                                JOptionPane.showMessageDialog(new JFrame(), "File not found!", "ERROR!",
                                    JOptionPane.ERROR_MESSAGE); // error message
                                // if file not
                                // found
                            } catch (NullPointerException e) {
                                // System.out.println(e.getLocalizedMessage());
                            } finally {
                                if (br != null) {
                                    try {
                                        br.close();
                                    } catch (IOException e) {
                                        e.printStackTrace();
                                    }
                                }
                            }
    
                        }
                    }
                }
            });
    
            fileMenu.add(saveAction);
            fileMenu.add(exitAction);
    
            // exit button shortcut
            exitAction.setMnemonic(KeyEvent.VK_X);
            exitAction.addActionListener(new ActionListener() {
    
                // setting up exit button
                public void actionPerformed(ActionEvent arg0) {
                    if (arg0.getSource().equals(exitAction)) {
                        System.exit(0);
                    }
                }
            });
    
            fileMenu.addSeparator();
    
            helpMenu.addSeparator();
            helpMenu.add(aboutAction);
    
            // about button shortcut
            aboutAction.setMnemonic(KeyEvent.VK_A);
            aboutAction.addActionListener(new ActionListener() {
    
                // clicking on about button opens up a dialog box which contain
                // information about the program
                public void actionPerformed(ActionEvent arg0) {
                    JOptionPane.showMessageDialog(menuBar.getComponent(0),
                        "This program is based on the development of a data visualization tool.
    "
                        + "The basic concept is to produce a piece of software which reads in raw textual data,
    "
                        + "analyses that data, then presents it graphically to the user.",
                        "About Us", JOptionPane.PLAIN_MESSAGE);
                }
            });
    
        }
    }
    
    解决方案

    Starting from your example, note the following:

    • Use a ChartPanel for your graphicsArea; then, your openAction() can simply invoke setChart().

    • Parse the chosen file in creatChart(); the title and data lines are shown, but the remaining attributes are left as an exercise.

    • Consider using Properties for your file format;

    • For greater flexibility, use Action as shown here.

    • To change the chart panel's default size, override getPreferredSize() as shown here.

    • Swing GUI objects should be constructed and manipulated only on the event dispatch thread.

    For a single chart, replace ChartPanel with JPanel and override paintComponent() to perform the rendering. You can transform coordinates using the approach is outlined here or here.

    import java.awt.BorderLayout;
    import java.awt.EventQueue;
    import java.awt.Font;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.KeyEvent;
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileReader;
    import java.io.IOException;
    import javax.swing.BorderFactory;
    import javax.swing.ImageIcon;
    import javax.swing.JFileChooser;
    import javax.swing.JFrame;
    import javax.swing.JMenu;
    import javax.swing.JMenuBar;
    import javax.swing.JMenuItem;
    import javax.swing.JOptionPane;
    import javax.swing.JScrollPane;
    import javax.swing.JSplitPane;
    import javax.swing.JTextArea;
    import org.jfree.chart.ChartFactory;
    import org.jfree.chart.ChartPanel;
    import org.jfree.chart.JFreeChart;
    import org.jfree.data.xy.XYSeries;
    import org.jfree.data.xy.XYSeriesCollection;
    
    //* @see https://stackoverflow.com/a/36764715/230513 */
    public class GUI extends JFrame {
    
        public GUI() {
            super("Data Visualiser");
            setDefaultCloseOperation(EXIT_ON_CLOSE);
            final JMenuBar menuBar = new JMenuBar();
            setJMenuBar(menuBar);
            JMenu fileMenu = new JMenu("File");
            JMenu helpMenu = new JMenu("Help");
            menuBar.add(fileMenu);
            menuBar.add(helpMenu);
    
            final JMenuItem openAction = new JMenuItem("Open", new ImageIcon("images/Open-icon.png"));
            final JMenuItem saveAction = new JMenuItem("Save", new ImageIcon("images/save-file.png"));
            final JMenuItem exitAction = new JMenuItem("Exit", new ImageIcon("images/exit-icon.png"));
            final JMenuItem aboutAction = new JMenuItem("About", new ImageIcon("images/about-us.png"));
    
            final JTextArea textArea = new JTextArea(8, 16);
            textArea.setFont(new Font("Serif", Font.BOLD, 16));
            textArea.setLineWrap(true);
            textArea.setWrapStyleWord(true);
            textArea.setEditable(false);
            JScrollPane textScrollPane = new JScrollPane(textArea);
            textScrollPane.setBorder(BorderFactory.createCompoundBorder(
                BorderFactory.createTitledBorder("Textual Representation"),
                BorderFactory.createEmptyBorder(5, 5, 5, 5)));
    
            ChartPanel graphicsArea = new ChartPanel(null);
            graphicsArea.setBorder(BorderFactory.createCompoundBorder(
                BorderFactory.createTitledBorder("Graphical Representation"),
                BorderFactory.createEmptyBorder(5, 5, 5, 5)));
    
            JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, textScrollPane, graphicsArea);
            splitPane.setOneTouchExpandable(true);
            splitPane.setResizeWeight(0.5);
            add(splitPane, BorderLayout.LINE_END);
    
            fileMenu.setMnemonic(KeyEvent.VK_F);
            fileMenu.add(openAction);
            openAction.addActionListener(new ActionListener() {
    
                @Override
                public void actionPerformed(ActionEvent arg0) {
                    if (arg0.getSource().equals(openAction)) {
                        JFileChooser fileChooser = new JFileChooser(new File("."));
                        if (fileChooser.showOpenDialog(fileChooser) == JFileChooser.APPROVE_OPTION) {
                            File file = fileChooser.getSelectedFile();
                            graphicsArea.setChart(creatChart(file));
                        }
                    }
                }
    
                private JFreeChart creatChart(File file) {
                    String title = null;
                    String xAxisLabel = null;
                    String yAxisLabel = null;
                    BufferedReader in = null;
                    int start = 0;
                    int interval = 0;
                    String data = null;
                    String line = null;
                    try {
                        in = new BufferedReader(new FileReader(file));
                        while ((line = in.readLine()) != null) {
                            textArea.append(line + "
    ");
                            if (line.startsWith("Title")) {
                                title = line.split(":")[1].trim();
                            }
                            // parse other lines here
                            if (!line.contains(":")) {
                                data = line;
                            }
                        }
                    } catch (IOException ex) {
                        ex.printStackTrace(System.err);
                    }
                    XYSeries dataset = new XYSeries(file.getName());
                    for (String s : data.split(",")) {
                        dataset.add(start, Double.valueOf(s));
                        start += interval;
                    }
                    return ChartFactory.createXYLineChart(title,
                        xAxisLabel, yAxisLabel, new XYSeriesCollection(dataset));
                }
            });
            fileMenu.add(saveAction);
            fileMenu.add(exitAction);
            exitAction.setMnemonic(KeyEvent.VK_X);
            exitAction.addActionListener(new ActionListener() {
    
                @Override
                public void actionPerformed(ActionEvent arg0) {
                    if (arg0.getSource().equals(exitAction)) {
                        System.exit(0);
                    }
                }
            });
            fileMenu.addSeparator();
            helpMenu.addSeparator();
            helpMenu.add(aboutAction);
            aboutAction.setMnemonic(KeyEvent.VK_A);
            aboutAction.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent arg0) {
                    JOptionPane.showMessageDialog(null,
                        "Visualization tool.",
                        "About Us", JOptionPane.PLAIN_MESSAGE);
                }
            });
            pack();
            setLocationRelativeTo(null);
            setVisible(true);
        }
    
        public static void main(String[] args) {
            EventQueue.invokeLater(() -> {
                new GUI();
            });
        }
    }
    

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08-29 03:04