Here you can find the source of packColumn(JTable table, int vColIndex, int margin)
| Parameter | Description |
|---|---|
| table | The table you want to resize a column. |
| vColIndex | The column number. |
| margin | Extra spaces for each side of column. |
public static void packColumn(JTable table, int vColIndex, int margin)
//package com.java2s; /**//from w w w. j a v a2s . c o m * Copyright 2008 WebPhotos * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import javax.swing.JTable; import javax.swing.table.DefaultTableColumnModel; import javax.swing.table.TableColumn; public class Main { /** * PackColumn sets the preferred width of the visible column specified by * vColIndex. The column will be just wide enough to show the column head * and the widest cell in the column. margin pixels are added to the left * and right (resulting in an additional width of 2*margin pixels). * * @param table The table you want to resize a column. * @param vColIndex The column number. * @param margin Extra spaces for each side of column. */ public static void packColumn(JTable table, int vColIndex, int margin) { DefaultTableColumnModel colModel = (DefaultTableColumnModel) table.getColumnModel(); TableColumn col = colModel.getColumn(vColIndex); int width; // Get width of column header javax.swing.table.TableCellRenderer renderer = col.getHeaderRenderer(); if (renderer == null) { renderer = table.getTableHeader().getDefaultRenderer(); } java.awt.Component comp = renderer.getTableCellRendererComponent(table, col.getHeaderValue(), false, false, 0, 0); width = comp.getPreferredSize().width; // Get maximum width of column data for (int r = 0; r < table.getRowCount(); r++) { renderer = table.getCellRenderer(r, vColIndex); comp = renderer.getTableCellRendererComponent(table, table.getValueAt(r, vColIndex), false, false, r, vColIndex); width = Math.max(width, comp.getPreferredSize().width); } // Add margin width += 2 * margin; // Set the width col.setPreferredWidth(width); } }