Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.awt.Component;
import javax.swing.JTable;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;

public class Main {
    /**
     * Resizes the columns to match content while keeping the table the same
     * size. This means that the last column may be larger than the content.
     */
    public static void resizeTableColumns(JTable table) {
        table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);

        int totalWidth = 0;
        for (int i = 0; i < table.getColumnCount(); i++) {
            DefaultTableColumnModel colModel = (DefaultTableColumnModel) table.getColumnModel();
            TableColumn col = colModel.getColumn(i);

            if (i == table.getColumnCount() - 1) {
                col.setPreferredWidth(table.getWidth() - totalWidth);
                table.setAutoResizeMode(JTable.AUTO_RESIZE_LAST_COLUMN);
                return;
            }

            int width = 0;
            TableCellRenderer renderer = col.getHeaderRenderer();
            if (renderer == null) {
                renderer = table.getTableHeader().getDefaultRenderer();
            }
            Component comp = renderer.getTableCellRendererComponent(table, col.getHeaderValue(), false, false, -1,
                    i);
            width = Math.max(width, comp.getPreferredSize().width);
            for (int r = 0; r < table.getRowCount(); r++) {
                renderer = table.getCellRenderer(r, i);
                comp = renderer.getTableCellRendererComponent(table, table.getValueAt(r, i), false, false, r, i);
                width = Math.max(width, comp.getPreferredSize().width);
            }
            totalWidth += width + 2;
            col.setPreferredWidth(width + 2);
        }
    }
}