Java Troubleshooting JTable Not Visible - Zulfi

[zak100]

Hi,
I am trying to add data in a table. I am not getting any error but table is not vi

import javax.swing.*;
import java.util.*;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

public class TableEg{
JFrame frame = new JFrame("Table Eg1");
JPanel panel = new JPanel();
JTable table = new JTable();
DefaultTableModel model = new DefaultTableModel(  );
JScrollPane scrollPane = new JScrollPane(table);
TableEg() {
  Vector<String> rowOne = new Vector<String>();
    rowOne.addElement("Row1-Column1");
    rowOne.addElement("Row1-Column2");
    rowOne.addElement("Row1-Column3");
    model.addRow(rowOne);
   
    Vector<String> rowTwo = new Vector<String>();
    rowTwo.addElement("Row2-Column1");
    rowTwo.addElement("Row2-Column2");
    rowTwo.addElement("Row2-Column3");
    model.addRow(rowTwo);
  
    table.setModel(model);
   
 
 
  frame.setSize(500,200);
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.add(panel);
  panel.add(table);
  panel.add(scrollPane);
  frame.setVisible(true);
}
public static void main(String args[]){
 
  new TableEg();
}
}

Some body please guide me why i can't see the table data?

Zulfi.

 

[jedishrfu]

Here's an example without an implied table model:

http://www.cs.cf.ac.uk/Dave/HCI/HCI_Handout_CALLER/node167.html

and here's Oracle's tutorial on using an explicit table model:

https://docs.oracle.com/javase/tutorial/uiswing/components/table.html

Off the bat, I don't see where you've defined a layout for the table.

 

[zak100]

Hi,This problem has been solved. I got its solution from other forum.
I can't understand what you mean by layout of the table.:
<Off the bat, I don't see where you've defined a layout for the table.>
if you mean the dimension of the table then you are right. They suggested me to use another constructor.

Complete code is:
import javax.swing.*;
import java.util.*;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

public class TableEg{
JFrame frame = new JFrame("Table Eg1");
JPanel panel = new JPanel();
JTable table = new JTable();
//DefaultTableModel model = new DefaultTableModel(  ); ***Doesnt work

DefaultTableModel model = new DefaultTableModel(new Object[]{"1","2","3"},0  ); 
JScrollPane scrollPane = new JScrollPane(table);
TableEg() {
  Vector<String> rowOne = new Vector<String>();
    rowOne.addElement("Row1-Column1");
    rowOne.addElement("Row1-Column2");
    rowOne.addElement("Row1-Column3");
    model.addRow(rowOne);
  
    Vector<String> rowTwo = new Vector<String>();
    rowTwo.addElement("Row2-Column1");
    rowTwo.addElement("Row2-Column2");
    rowTwo.addElement("Row2-Column3");
    model.addRow(rowTwo);
    table.setModel(model);
    frame.setSize(500,200);
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.add(panel);
  //panel.add(table);
  panel.add(scrollPane);
  frame.setVisible(true);
}
public static void main(String args[]){

  new TableEg();
}
}

Thanks for your response.
Zulfi.