Help with setting the JTable rows to resize to the size of the file

[ben riches]

Hello All,
I need some help with my code. I am using visual age for Java to construct the Gui but have come to a stop now as i'm having trouble.
The problem that I have is I want to be able to set the ampunt of rows in my JTable to the size of the file, so if the file has 50 lines going down I want the JTable rows to resize to 50.
My code so far, when you click on the browse button the JFilechooser pane shows up. I then read in my file that I want to read in. in this case it is a csv file, but that is as far as I have got.
The Jtable rows do not resize to the size of the file.
so could someone please be so kind as to direct me in the right direction or even adjust my code to how it should be
Thanks
Ben

import javax.swing.table.TableModel;
import java.util.*;
import java.io.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.*;
import javax.swing.table.DefaultTableModel;
public class DB extends JFrame {
int j = 10;
JTextField name = new JTextField(15);
   JTextField name1 = new JTextField(15);
   JFrame frame = new JFrame();
   JPanel first;
JButton view;
String aq = new String();
int si = 0;

private JPanel ivjDBPane = null;
private JPanel ivjJFrameContentPane = null;
private JTextField ivjJTextField1 = null;
private JTextField ivjJTextField2 = null;
private JButton ivjJButton1 = null;
IvjEventHandler ivjEventHandler = new IvjEventHandler();
class IvjEventHandler implements java.awt.event.MouseListener {
public void mouseClicked(java.awt.event.MouseEvent e) {
if (e.getSource() == DB.this.getJButton1()) 
connEtoC1(e);
};
public void mouseEntered(java.awt.event.MouseEvent e) {};
public void mouseExited(java.awt.event.MouseEvent e) {};
public void mousePressed(java.awt.event.MouseEvent e) {};
public void mouseReleased(java.awt.event.MouseEvent e) {};
};
private JScrollPane ivjJScrollPane1 = null;
private JTable ivjScrollPaneTable = null;
public DB() {
super();
initialize();
}
public DB(String title) {
super(title);
}
private void connEtoC1(java.awt.event.MouseEvent arg1) {
try {

this.jButton1_MouseClicked(arg1);

} catch (java.lang.Throwable ivjExc) {

handleException(ivjExc);
}
}
private javax.swing.JPanel getDBPane() {
if (ivjDBPane == null) {
try {
ivjDBPane = new javax.swing.JPanel();
ivjDBPane.setName("DBPane");
ivjDBPane.setLayout(null);
getDBPane().add(getJTextField1(), getJTextField1().getName());
getDBPane().add(getJTextField2(), getJTextField2().getName());
getDBPane().add(getJButton1(), getJButton1().getName());
getDBPane().add(getJScrollPane1(), getJScrollPane1().getName());

} catch (java.lang.Throwable ivjExc) {

handleException(ivjExc);
}
}
return ivjDBPane;
}
private javax.swing.JButton getJButton1() {
if (ivjJButton1 == null) {
try {
ivjJButton1 = new javax.swing.JButton();
ivjJButton1.setName("JButton1");
ivjJButton1.setText("BROWSE");
ivjJButton1.setBounds(50, 113, 85, 25);

} catch (java.lang.Throwable ivjExc) {

handleException(ivjExc);
}
}
return ivjJButton1;
}
private javax.swing.JPanel getJFrameContentPane() {
if (ivjJFrameContentPane == null) {
try {
ivjJFrameContentPane = new javax.swing.JPanel();
ivjJFrameContentPane.setName("JFrameContentPane");
ivjJFrameContentPane.setLayout(new java.awt.BorderLayout());
getJFrameContentPane().add(getDBPane(), "Center");

} catch (java.lang.Throwable ivjExc) {

handleException(ivjExc);
}
}
return ivjJFrameContentPane;
}
private javax.swing.JScrollPane getJScrollPane1() {
if (ivjJScrollPane1 == null) {
try {
ivjJScrollPane1 = new javax.swing.JScrollPane();
ivjJScrollPane1.setName("JScrollPane1");
ivjJScrollPane1.setVerticalScrollBarPolicy(javax.swing.JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
ivjJScrollPane1.setHorizontalScrollBarPolicy(javax.swing.JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
ivjJScrollPane1.setBounds(266, 45, 468, 418);
getJScrollPane1().setViewportView(getScrollPaneTable());

} catch (java.lang.Throwable ivjExc) {

handleException(ivjExc);
}
}
return ivjJScrollPane1;
}
private javax.swing.JTextField getJTextField1() {
if (ivjJTextField1 == null) {
try {
ivjJTextField1 = new javax.swing.JTextField();
ivjJTextField1.setName("JTextField1");
ivjJTextField1.setBounds(33, 83, 166, 20);

} catch (java.lang.Throwable ivjExc) {

handleException(ivjExc);
}
}
return ivjJTextField1;
}
private javax.swing.JTextField getJTextField2() {
if (ivjJTextField2 == null) {
try {
ivjJTextField2 = new javax.swing.JTextField();
ivjJTextField2.setName("JTextField2");
ivjJTextField2.setBounds(34, 147, 167, 20);

} catch (java.lang.Throwable ivjExc) {

handleException(ivjExc);
}
}
return ivjJTextField2;
}

private javax.swing.JTable getScrollPaneTable() {
if (ivjScrollPaneTable == null) {
try {
int j=1000;
      String[][] data = new String[j][2];
      for (int k=0; k<j; k++){
         String[] row = {"",""};
         data[k] = row;
      }
String[] columnNames = {"FirstName",
"LastName"};
ivjScrollPaneTable = new javax.swing.JTable(data, columnNames);
ivjScrollPaneTable.setName("ScrollPaneTable");
getJScrollPane1().setColumnHeaderView(ivjScrollPaneTable.getTableHeader());
ivjScrollPaneTable.setBounds(0, 0, 450, 400);

} catch (java.lang.Throwable ivjExc) {

handleException(ivjExc);
}
}
return ivjScrollPaneTable;
}
private void handleException(java.lang.Throwable exception) {
}
private void initConnections() throws java.lang.Exception {

getJButton1().addMouseListener(ivjEventHandler);
}
private void initialize() {
try {

setName("DB");
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
setSize(755, 519);
setTitle("DB");
setContentPane(getJFrameContentPane());
initConnections();
} catch (java.lang.Throwable ivjExc) {
handleException(ivjExc);
}

}
  
  
public void jButton1_MouseClicked(java.awt.event.MouseEvent mouseEvent) {
 String token1 = null;
      int num=0;
      int num2 = 0;
      int num3 = 0;
      Vector v = new Vector(100);
      String token = null;
       Vector tok = new Vector();
      String currentToken = "";
      try {
         JFileChooser chooser = new JFileChooser();
         chooser.setDialogTitle("TITLE");
         //chooser.setFileFilter(new FileFilter() {
         // defines which files are accepted (*.csv)
            //public boolean accept(File file) {
               //if(file.isFile() && file.getName().toLowerCase().endsWith("*.csv")){
                  //return true;
                  //}
//else {
                     //return false;
                  //}
           // }
            //public String getDescription() {
               //return "All Files";
            //}
         //}
//);
         chooser.setMultiSelectionEnabled(false);
         // exactly 1 file could be selected
         int returnValue = chooser.showOpenDialog(null);
         // null could be replaced by any parent java.awt.Component
         if(returnValue == JFileChooser.APPROVE_OPTION) {
            FileReader file = new FileReader(chooser.getSelectedFile());
             //FileReader file = new FileReader("work.csv");
             BufferedReader buff = new BufferedReader(file);
            String line = buff.readLine();
            StringTokenizer s = null;
            StringTokenizer s2 = null;
            boolean eof = false;
             while (!eof){
               s = new StringTokenizer(line.trim(),",",true);
               boolean lastToken = true;
              while (s.hasMoreTokens()) {
                  token = s.nextToken();
                  if (lastToken){
                      if (token.equals(",")) {
                        v.add("");
                     }
                     tok.add(s);
                     lastToken = false;
                  }
                   if (! token.equals(",")) {
                     v.add(token);
                   }
                   else {
                      if (currentToken.equals(",")) {
                        v.add("");
                     }
                   }
                   currentToken = token;
               }
               if (token.equals(",")) {
                  v.add("");
                }
                line = buff.readLine();
               if (line == null)
                   eof = true;
            }
            buff.close();
            num = tok.size();
            num2 = v.size();
            num3 = num2/num;
            System.out.println(num);
            System.out.println(num3);
            System.out.println(v.size());
         }
      }catch (FileNotFoundException fe) {
         System.out.println("Error - - " + fe.toString());
      }catch (NumberFormatException ne) {
         System.out.println("Error - - " + ne.toString());
      } catch (IOException e) {
         System.out.println("Error - - " + e.toString());
      }
return;
}

public static void main(java.lang.String[] args) {
 
try {

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

DB aDB = new DB();

aDB.addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosed(java.awt.event.WindowEvent e) {
System.exit(0);
};
});
aDB.setVisible(true);
} catch (Throwable exception) {
System.err.println("Exception occurred in main() of DB");
exception.printStackTrace(System.out);
}
 
}
}

[Joe Ess]

You could just invoke setNumRows() on the JTable's data model (invoke JTable.getModel() to get the TableModel, then cast it to DefaultTableModel). You should look at How to use Tables in the Java Tutorial since you will probably want to add and edit data in the JTable as well.

[ben riches]

Hello Joe,
Thanks for the reply,
That is what i'm having trouble with getting the JTable rows to resize to 8 (the size of the file, I have looked at the link you gave me but I am still having great difficultied with this, could you please help me with the code?
Thanks Again
Ben
[ January 27, 2004: Message edited by: ben riches ]