Java JTable Header makeTableHeadersCentered(final JTable table, final boolean dataColsAlso)

Description

Sets a JTable to have the headers be centered.

License

Open Source License

Parameter

Parameter	Description
table	the table
dataColsAlso	whether the String data columns should be cetnered.

Declaration

public static void makeTableHeadersCentered(final JTable table, final boolean dataColsAlso) 

Method Source Code

//package com.java2s;
/* Copyright (C) 2015, University of Kansas Center for Research
 * //from   w  ww .  j  a v a  2s  .  c  om
 * Specify Software Project, specify@ku.edu, Biodiversity Institute,
 * 1345 Jayhawk Boulevard, Lawrence, Kansas, 66045, USA
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

import javax.swing.JTable;

import javax.swing.SwingConstants;

import javax.swing.table.DefaultTableCellRenderer;

import javax.swing.table.TableCellRenderer;

public class Main {
    /**
     * Sets a JTable to have the headers be centered. Also, the caller can indicate whether
     * and "String" columns are also centered.
     * @param table the table
     * @param dataColsAlso whether the String data columns should be cetnered.
     */
    public static void makeTableHeadersCentered(final JTable table, final boolean dataColsAlso) {
        ((DefaultTableCellRenderer) table.getTableHeader().getDefaultRenderer())
                .setHorizontalAlignment(SwingConstants.CENTER);

        if (dataColsAlso) {
            TableCellRenderer tcr = table.getDefaultRenderer(String.class);

            // For Strings with no changes made to the table, the render is a DefaultTableCellRender.
            DefaultTableCellRenderer dtcr = (DefaultTableCellRenderer) tcr;

            // set the alignment to center
            dtcr.setHorizontalAlignment(SwingConstants.CENTER);
        }
    }
}

Related

1. headerString(JTable t)
2. isColumnSelected(JTableHeader tableHeader, int columnModelIndex)
3. isRowHeaderVisible(JTable table)
4. layoutHeaders(JTable p_Table)
5. makeHeaderFillEmptySpace(JTable table)
6. modifyTableHeader(JTableHeader head, Vector columnNames)
7. paintHeader(Graphics graphics, JTable table, int x, int width)
8. removeBadChars(JTable table, boolean skipHeaderBoolean)
9. setHeaderIcon(JTable table, final int column, final ImageIcon icon)