How to set the RowHeight dynamically in a JTable

Question

I want to put a String in a JTable that is longer than the given cell-width. How can I set the rowHeight dynamically so that I can read the whole S

Answer 1

I find it simplest to adjust the row height from inside the component renderer, like this:

public class RowHeightCellRenderer extends JTextArea implements TableCellRenderer
{
    public Component getTableCellRendererComponent(JTable table, Object 
            value, boolean isSelected, boolean hasFocus,
            int row, int column) {

        setText(value.toString());

        // Set the component width to match the width of its table cell
        // and make the height arbitrarily large to accomodate all the contents
        setSize(table.getColumnModel().getColumn(column).getWidth(), Short.MAX_VALUE);

        // Now get the fitted height for the given width
        int rowHeight = this.getPreferredSize().height;

        // Get the current table row height
        int actualRowHeight = table.getRowHeight(row);

        // Set table row height to fitted height.
        // Important to check if this has been done already
        // to prevent a never-ending loop.
        if (rowHeight != actualRowHeight) {
           table.setRowHeight(row, rowHeight);
        }

        return this;
    }
}

This will also work for a renderer which returns a JTextPane.