Java JTable Column Width Set adjustColumnWidth(TableModel model, int columnIndex, int maxWidth, int rightPadding, JTable table)

Description

It will adjust the column width to match the widest element.

License

Open Source License

Parameter

Parameter	Description
model	a parameter
columnIndex	a parameter
table	a parameter

Declaration

public static void adjustColumnWidth(TableModel model, int columnIndex, int maxWidth, int rightPadding,
        JTable table) 

Method Source Code

//package com.java2s;
/*/*  w ww  .jav  a 2  s.c o  m*/
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

import javax.swing.*;

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

public class Main {
    /**
     * It will adjust the column width to match the widest element.
     * (You might not want to use this for every column, consider some columns might be really long)
     * @param model
     * @param columnIndex
     * @param table
     * @return
     */
    public static void adjustColumnWidth(TableModel model, int columnIndex, int maxWidth, int rightPadding,
            JTable table) {
        if (columnIndex > model.getColumnCount() - 1) {
            //invalid column index
            return;
        }

        if (!model.getColumnClass(columnIndex).equals(String.class)) {
            return;
        }

        String longestValue = "";
        for (int row = 0; row < model.getRowCount(); row++) {
            String strValue = (String) model.getValueAt(row, columnIndex);
            if (strValue != null && strValue.length() > longestValue.length()) {
                longestValue = strValue;
            }
        }

        Graphics g = table.getGraphics();

        try {
            int suggestedWidth = (int) g.getFontMetrics(table.getFont()).getStringBounds(longestValue, g)
                    .getWidth();
            table.getColumnModel().getColumn(columnIndex)
                    .setPreferredWidth(((suggestedWidth > maxWidth) ? maxWidth : suggestedWidth) + rightPadding);
        } catch (Exception e) {
            table.getColumnModel().getColumn(columnIndex).setPreferredWidth(maxWidth);
            e.printStackTrace();
        }
    }
}

Related

1. adjustColumnPreferredWidths(JTable table)
2. adjustColumnPreferredWidths(JTable table)
3. adjustColumnWidth(JTable table, int buf)
4. adjustColumnWidth(JTable tbl, int col, int maxColumnWidth)
5. adjustColWidth(JTable table, int firstColumnWidth, int middleColumnWidth, int lastColumnWidth, int padding)
6. autoFitColumnWidth(JTable table, TableColumn tableColumn)
7. autoResizeColWidth(final JTable table, final DefaultTableModel model)
8. autoResizeColWidth(JTable table, AbstractTableModel model)