JTable显示错误值/未显示整个值

问题描述 投票：1回答：1

我有一个从另一个程序生成的文件，我正在尝试创建一个其他程序，该程序将创建一个包含文件的JTable。我已经尝试使用StackOverflow教程对其进行修复，但是我无法弄清楚出了什么问题。我使用了一个教程来帮助我创建JTable，因此我什至无法弄清楚它出了什么问题。

这是文件的内容


|10.140000| 13.084819| 4392.000000| 82.699923| 11.900000| 10.118987| 5166.000000| 59.443868| 
|28.880000| 8.831744| 48346.000000| 583.104062| 32.200000| 5.957555| 4264.000000| 93.116301| 
|259.900000| 3.492032| 22688.000000| 126.516054| 267.300000| 1.961500| 20010.000000| 66.324373| 
|624.020000| 2.592010| 14994.000000| 30.505162| 632.360000| 1.244278| 15406.000000| 19.590889| 
|1886.800000| 1.147785| 52436.000000| 30.082485| 1896.840000| 0.683268| 53950.000000| 95.582836| 
|4293.860000| 0.919986| 226210.000000| 134.282595| 4294.760000| 0.392905| 77470.000000| 28.020386| 
|9577.540000| 0.400449| 424068.000000| 116.602770| 9577.140000| 0.206953| 184788.000000| 117.112959| 
|129563.160000| 0.125037| 1203728.000000| 6.114531| 129205.700000| 0.054201| 1386360.000000| 6.121366| 
|764396.660000| 0.051151| 8170482.000000| 12.860777| 762439.080000| 0.023297| 10045558.000000| 42.648308| 
|1628690.480000| 0.028820| 20205582.000000| 34.315799| 1624935.860000| 0.012787| 23381164.000000| 23.840969|

这是代码中填充值的部分：

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        String filePath = "C:\\Users\\hafiz\\OneDrive\\Documents\\test\\file.txt";
        File file = new File(filePath);

        try {
            BufferedReader br = new BufferedReader(new FileReader(file));
            String[] columnNames = {
                "Size", "Iterative Avg Count", "Iterative Coef Count",
                    "Iterative Avg Time", "Iterative Coef Time", "Recurive Avg Count", 
                    "Recurive Coef Count", "Recurive Avg Time", "Recurive Coef Time"
            };
            DefaultTableModel model = (DefaultTableModel) jTable1.getModel();
            model.setColumnIdentifiers(columnNames);

            Object[] tableLines = br.lines().toArray();

            for (int i = 0; i < tableLines.length; i++) {
                String line = tableLines[i].toString().trim();
                String[] dataRow = line.split("|");
                model.addRow(dataRow);
            }
        } catch (FileNotFoundException ex) {
            Logger.getLogger(Table.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

这是完整的代码，如果有任何用处：


import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.table.DefaultTableModel;

/*
 * 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.
 */

/**
 *
 * @author hafiz
 */
public class Table extends javax.swing.JFrame {

    /**
     * Creates new form Table
     */
    public Table() {
        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() {

        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jButton2 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {

            },
            new String [] {

            }
        ));
        jScrollPane1.setViewportView(jTable1);

        jButton2.setText("Import Text");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 745, Short.MAX_VALUE)
            .addGroup(layout.createSequentialGroup()
                .addGap(331, 331, 331)
                .addComponent(jButton2)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addComponent(jButton2)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 8, Short.MAX_VALUE)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 269, javax.swing.GroupLayout.PREFERRED_SIZE))
        );

        pack();
    }// </editor-fold>                        

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        String filePath = "C:\\Users\\hafiz\\OneDrive\\Documents\\test\\file.txt";
        File file = new File(filePath);

        try {
            BufferedReader br = new BufferedReader(new FileReader(file));
            String[] columnNames = {
                "Size", "Iterative Avg Count", "Iterative Coef Count",
                    "Iterative Avg Time", "Iterative Coef Time", "Recurive Avg Count", 
                    "Recurive Coef Count", "Recurive Avg Time", "Recurive Coef Time"
            };
            DefaultTableModel model = (DefaultTableModel) jTable1.getModel();
            model.setColumnIdentifiers(columnNames);

            Object[] tableLines = br.lines().toArray();

            for (int i = 0; i < tableLines.length; i++) {
                String line = tableLines[i].toString().trim();
                String[] dataRow = line.split("|");
                model.addRow(dataRow);
            }
        } catch (FileNotFoundException ex) {
            Logger.getLogger(Table.class.getName()).log(Level.SEVERE, null, ex);
        }

    }                                        

    /**
     * @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(Table.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Table.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Table.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Table.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Table().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton jButton2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    // End of variables declaration                   
}

第一列（大小）对于值记录为空。

java swing file-io jtable
1个回答
0
投票

您有两个主要问题：

  1. 您输入的| 10.140000 | 13.084819 | 4392.000000 | 82.699923 | 11.900000 | 10.118987 | 5166.000000 | 59.443868 |以分隔符开头，因此size列将为空，因为它将包含第一个|左边的子字符串。实例

  2. 您的输入有8个值，但是您有9列，因此至少一列将没有值。

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