fit JTable Columns - Java Swing

Java examples for Swing:JTable Column

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Description

fit JTable Columns

Demo Code


//package com.java2s;
import java.util.Enumeration;
import javax.swing.JTable;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumn;

public class Main {
    public static void fitTableColumns(JTable table) {
        JTableHeader header = table.getTableHeader();
        int rowCount = table.getRowCount();
        Enumeration columns = table.getColumnModel().getColumns();
        while (columns.hasMoreElements()) {
            TableColumn column = (TableColumn) columns.nextElement();
            int col = header.getColumnModel().getColumnIndex(
                    column.getIdentifier());
            int width = (int) table
                    .getTableHeader()/*from   ww  w.j  a  v a  2  s.  c  om*/
                    .getDefaultRenderer()
                    .getTableCellRendererComponent(table,
                            column.getIdentifier(), false, false, -1, col)
                    .getPreferredSize().getWidth();
            for (int row = 0; row < rowCount; row++) {
                int preferedWidth = (int) table
                        .getCellRenderer(row, col)
                        .getTableCellRendererComponent(table,
                                table.getValueAt(row, col), false, false,
                                row, col).getPreferredSize().getWidth();
                width = Math.max(width, preferedWidth);
            }
            header.setResizingColumn(column); // ???????
            column.setWidth(width + table.getIntercellSpacing().width);
        }
    }

    public static void fitTableColumns(JTable table, int[] columnWidths) {
        for (int i = 0; i < columnWidths.length; i++) {
            table.getColumnModel().getColumn(i)
                    .setPreferredWidth(columnWidths[i]);
        }
    }
}

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