Could Not Set the Column Width to Zero I.E. Not Made Column Invisible

could not set the column width to zero i.e. not made column invisible

• not, never to remove TableColumn from TableModel, this is wrong suggestion, instead of to use built-in method JTable#removeColumn(TableColumn aColumn),

• notice, this method remove column only from View, in the model is removed column still presents, and you can revert that, visible the removed column by using JTable#addColumn(TableColumn aColumn)

EDIT

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Stack;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.WindowConstants;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;

public class TableRowHeight {

    private static final long serialVersionUID = 1L;
    private JFrame frame = new JFrame("p*s*s*s*s*t*t");
    private String[] columnNames = {"one", "two", "Playing with", "four", "five",};
    private String[][] data = {
        {"aaaaaa", "bbbbbb", "cccccc", "dddddd", "eeeeeee",},
        {"bbbbbb", "cccccc", "dddddd", "eeeeeee", "aaaaaa",},
        {"cccccc", "dddddd", "eeeeeee", "aaaaaa", "bbbbbb",},
        {"dddddd", "eeeeeee", "aaaaaa", "bbbbbb", "cccccc",},
        {"eeeeeee", "aaaaaa", "bbbbbb", "cccccc", "dddddd",}};
    private JTable table = new JTable(new DefaultTableModel(data, columnNames));
    private TableColumnModel tcm = table.getColumnModel();
    private Stack<TableColumn> colDeleted = new Stack<TableColumn>();
    private JButton restoreButton = new JButton("Restore Column Size");
    private JButton hideButton = new JButton("Set Column Size to Zero");
    private JButton deleteButton = new JButton("Delete Column");
    private JButton addButton = new JButton("Restore Column");

    public TableRowHeight() {
        table.setRowMargin(4);
        table.setRowHeight(30);
        table.setFont(new Font("SansSerif", Font.BOLD + Font.PLAIN, 20));
        JScrollPane scrollPane = new JScrollPane(table);
        for (int i = 0; i < (tcm.getColumnCount()); i++) {
            tcm.getColumn(i).setPreferredWidth(100);
        }
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        restoreButton.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                tcm.getColumn(2).setPreferredWidth(100);
            }
        });
        hideButton.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                tcm.getColumn(2).setPreferredWidth(000);
            }
        });
        deleteButton.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                if (table.getColumnCount() > 0) {
                    TableColumn colToDelete = table.getColumnModel().getColumn(table.getColumnCount() - 1);
                    table.removeColumn(colToDelete);
                    table.validate();
                    colDeleted.push(colToDelete);
                    addButton.setEnabled(true);
                } else {
                    deleteButton.setEnabled(false);
                }
            }
        });
        addButton.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                if (colDeleted.size() > 0) {
                    table.addColumn(colDeleted.pop());
                    table.validate();
                    deleteButton.setEnabled(true);
                } else {
                    addButton.setEnabled(false);
                }
            }
        });
        JPanel btnPanel = new JPanel();
        btnPanel.add(hideButton);
        btnPanel.add(restoreButton);
        btnPanel.add(deleteButton);
        btnPanel.add(addButton);
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.add(scrollPane, BorderLayout.CENTER);
        frame.add(btnPanel, BorderLayout.SOUTH);
        frame.pack();
        frame.setLocation(150, 150);
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {

            public void run() {
                TableRowHeight frame = new TableRowHeight();
            }
        });
    }
}

EDIT2

you have to check too

JTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
JTable.getTableHeader().setReorderingAllowed(false);

unable to set column width after jtable becomes visible

as i have pointed out, removing the table column not only adds complexity

I agree, and I gave you working code that manages this complexity. I see you didn't try the code even though it can be added to your program with a single line of code.

try adding and removing data from the table

That is not an issue. All a TableColumn does is map the data from the TableModel to the TableColumn. When you create a TableColumn, it is created with a default column value of 0. So yes, unless you manage this properly you will have a problem, which is why I gave you a link to working code.

my question as to why column sizes are not adjusted when invoking setMin, setPreferred and setMax.

The answer is that order of code execution is important. That is the preferred size must be in range of the min/max sizes, so you need to set the preferred size last:

    tableColumn.setMinWidth(minWidth);
    tableColumn.setMaxWidth(maxWidth);
    tableColumn.setPreferredWidth(preferredWidth);

Edit:

Simple example. You can call it an MCVE or a SSCCE.

import java.awt.*;
import javax.swing.table.*;

public class Main
{
    public static void main(String[] args)
    {
        TableColumn tc = new TableColumn();
        tc.setMinWidth(1);
        tc.setMaxWidth(10);
        tc.setPreferredWidth(15);
        System.out.println( tc.getPreferredWidth() );
    }
}

If this does not verify that the API is working correctly, then I don't know what will.

How to hide a particlar column in DefaultTableModel from displaying it in table?

• by default minimum size is 10 pixels widht,

• you can to remove / add column from JTable view, column presents in the XxxTableModel, you can to hide and show any of column(s)

How to hide the Jtable column data?

You need to remove the TableColumn from the TableColumnModel of the JTable. For example:

table.removeColumn( table.getColumn(...) );

Now the column will not display in the table, but the data is still available in the TableModel. to access the data you use:

table.getModel().getValueAt(...);

Hide a column in JTable

Set the Column Minimum and Maximum width as zero.

table.getColumnModel().getColumn(columnIndex).setMinWidth(0);
table.getColumnModel().getColumn(columnIndex).setMaxWidth(0);

As suggested by Andrew Thomson in the comment section you can also use removeColumn.

From javaDoc;

removeColumn

public void removeColumn(TableColumn aColumn) 

Removes aColumn from this JTable's array of columns. Note: this method does
not remove the column of data from the model; it just removes the
TableColumn that was responsible for displaying it. Parameters:
aColumn - the TableColumn to be removed

P.S: But I have personally used the first approach to hide a column in the JTable. Thanks for removeColumn method I will try to use it from now on.

Can not set ASP.Net Gridview Template Column width to 0

I found TemplateColumn HeaderText is automatically set to four spaces (automatically generated), setting the HeaderText to one space from UI fixed the problem.

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