Java JTable Column Width Set adjustColumnPreferredWidths(JTable table)

Description

adjust Column Preferred Widths

License

LGPL

Declaration

public static void adjustColumnPreferredWidths(JTable table) 

Method Source Code

//package com.java2s;
//License from project: LGPL 

import javax.swing.*;

import java.awt.*;

import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;

public class Main {
    public static void adjustColumnPreferredWidths(JTable table) {
        // strategy - get max width for cells in column and
        // make that the preferred width
        TableColumnModel columnModel = table.getColumnModel();
        for (int col = 0; col < table.getColumnCount(); col++) {

            int maxwidth = 0;
            for (int row = 0; row < table.getRowCount(); row++) {
                TableCellRenderer rend = table.getCellRenderer(row, col);
                Object value = table.getValueAt(row, col);
                Component comp = rend.getTableCellRendererComponent(table, value, false, false, row, col);
                maxwidth = Math.max(comp.getPreferredSize().width, maxwidth);
            }//from  w w  w.j a  va2s.c o m
            TableColumn column = columnModel.getColumn(col);
            TableCellRenderer headerRenderer = column.getHeaderRenderer();
            if (headerRenderer == null) {
                headerRenderer = table.getTableHeader().getDefaultRenderer();
            }
            Object headerValue = column.getHeaderValue();
            Component headerComp = headerRenderer.getTableCellRendererComponent(table, headerValue, false, false, 0,
                    col);
            maxwidth = Math.max(maxwidth, headerComp.getPreferredSize().width);
            column.setPreferredWidth(maxwidth);
        }
    }
}

Related

1. adjustColumnPreferredWidths(JTable table)
2. adjustColumnWidth(JTable table, int buf)
3. adjustColumnWidth(JTable tbl, int col, int maxColumnWidth)
4. adjustColumnWidth(TableModel model, int columnIndex, int maxWidth, int rightPadding, JTable table)
5. adjustColWidth(JTable table, int firstColumnWidth, int middleColumnWidth, int lastColumnWidth, int padding)