javaswingjtablepreferredsizetablecolumn

Automatically adjust Jtable Column to fit content

I am trying to match the JTable column width depending on the data inside. My Code: 

    for(int column = 0; column < gui.testsuiteInfoTable.getColumnCount(); column ++){
        int  width =0;
    for (int row = 0; row < gui.testsuiteInfoTable.getRowCount(); row++) {
         TableCellRenderer renderer = gui.testsuiteInfoTable.getCellRenderer(row, column);
         Component comp = gui.testsuiteInfoTable.prepareRenderer(renderer, row, column);
         width = Math.max (comp.getPreferredSize().width, width);
         System.out.println(width);
     }
    TableColumn col = new TableColumn();
    col = gui.testsuiteInfoTable.getColumnModel().getColumn(column);
    System.out.println(width);
    col.setWidth(width);
    gui.testsuiteInfoTable.revalidate();

    }
}

The sizes are correct I guess but the table columns still all have the same width! The table is embedded in a ScrollPane in a GridBagLayout is that the problem? Thanks for any suggestions.

Solution

  • If you can use an extra library, try Swingx (https://java.net/projects/swingx) There you have a JXTable, with a method "packAll()", that does exactly what you are asking for