在 JFreeChart 库的帮助下，我创建了一个 Java 桌面程序。我可以打开一个股票数据文件 (symbol.txt) 并让程序显示几个指标。我想在一个新的 JFrame 窗口中创建一个资源管理器，该窗口将打开一个包含股票数据文件的文件夹并检查一些指标值。我的问题是找到一种方法一次打开多个文件（在用户级别），但在程序级别一个接一个地处理每个文件（打开第一个文件，检查指示器，关闭第一个文件......继续第二个文件） . 谢谢你。
几个小时后更新：
org.jfree.data.general.SeriesException这是第一次尝试，当我尝试打开多个文件时会产生错误。
您正在尝试添加 2011 年 1 月 4 日期间的观察 但该系列已经包含对该时间段的观察。 不允许重复。尝试使用 addOrUpdate() 方法。
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package nysemarketpick;
import java.io.File;
import javax.swing.JFileChooser;
/**
*
* @author skiabox
*/
public class ExplorerForm extends javax.swing.JFrame {
PriceVolumeChart chart;
/**
* Creates new form ExplorerForm
*/
public ExplorerForm() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
fileChooser = new javax.swing.JFileChooser();
scrollPane = new javax.swing.JScrollPane();
textArea = new javax.swing.JTextArea();
fileMenuBar = new javax.swing.JMenuBar();
fileMenu = new javax.swing.JMenu();
openItem = new javax.swing.JMenuItem();
fileChooser.setFileSelectionMode(javax.swing.JFileChooser.FILES_AND_DIRECTORIES);
fileChooser.setMultiSelectionEnabled(true);
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Stock Explorer");
textArea.setColumns(20);
textArea.setRows(5);
scrollPane.setViewportView(textArea);
fileMenu.setText("File");
openItem.setText("Open");
openItem.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
openItemActionPerformed(evt);
}
});
fileMenu.add(openItem);
fileMenuBar.add(fileMenu);
setJMenuBar(fileMenuBar);
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(scrollPane, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 314, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(80, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(75, 75, 75)
.add(scrollPane, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 100, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(103, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void openItemActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int returnVal = fileChooser.showOpenDialog(this);
if (returnVal == JFileChooser.APPROVE_OPTION)
{
File files[];
//File myFile;
files = fileChooser.getSelectedFiles();
for (int i = 0; i < files.length; i++)
{
//myFile = files
chart = new PriceVolumeChart(files[i].getAbsolutePath());
System.out.println(files[i].getAbsolutePath());
if (chart.getTLDirection().equals("(-1)"))
{
textArea.append(files[i].getAbsolutePath() + "\n");
}
chart = null;
}
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/*
* Set the Nimbus look and feel
*/
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/*
* If Nimbus (introduced in Java SE 6) is not available, stay with the
* default look and feel. For details see
* http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(ExplorerForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(ExplorerForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(ExplorerForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(ExplorerForm.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/*
* Create and display the form
*/
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new ExplorerForm().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JFileChooser fileChooser;
private javax.swing.JMenu fileMenu;
private javax.swing.JMenuBar fileMenuBar;
private javax.swing.JMenuItem openItem;
private javax.swing.JScrollPane scrollPane;
private javax.swing.JTextArea textArea;
// End of variables declaration
}
