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Java JTable Header Shell

I am trying to get a table caption for word wrap. I managed to do this, but the first row of data is expanding. Code for table:

public class GenerateTable extends JTable {

    private JCheckBox boxSelect = new JCheckBox();
    private JTableHeader hdGen;

    public class LineWrapCellRenderer extends JTextArea implements TableCellRenderer {

        private static final long serialVersionUID = 1L;
        int rowHeight = 0;  // current max row height for this scan
        @Override
        public Component getTableCellRendererComponent(
                JTable table,
                Object value,
                boolean isSelected,
                boolean hasFocus,
                int row,
                int column)
        {
            /*
             * row < 0 means header
             */
            if(row >= 0) {
                setWrapStyleWord(false);
                return this;
            }
            setText((String) value);
            setWrapStyleWord(true);
            setLineWrap(true);
            // current table column width in pixels
            int colWidth = table.getColumnModel().getColumn(column).getWidth();

            // set the text area width (height doesn't matter here)
            setSize(new Dimension(colWidth, 1)); 

            // get the text area preferred height and add the row margin
            int height = getPreferredSize().height + table.getRowMargin();
            // ensure the row height fits the cell with most lines, row = -1 for header
            if (column == 2 || height > rowHeight) {
                table.setRowHeight(row, height);
                rowHeight = height;
            } 
            return this;
        }
    }
    LineWrapCellRenderer lwHeader = new LineWrapCellRenderer();
    public GenerateTable(GenerateTableModel model) {
        super(model);
        this.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        /*
         * Select
         */
        TableColumn colSelect = this.getColumnModel().getColumn(0);
        colSelect.setCellEditor(new DefaultCellEditor(boxSelect));
        colSelect.setPreferredWidth(60);
        /*
         * category
         */
        this.getColumnModel().getColumn(1).setResizable(false);
        this.getColumnModel().getColumn(1).setPreferredWidth(200);
        /*
         * Amount values
         */
        for (int i=2;i<model.getColumnCount();i++) {
            colSelect = this.getColumnModel().getColumn(i);
            colSelect.setPreferredWidth(100);
            colSelect.setResizable(false);
            colSelect.setHeaderRenderer(lwHeader);
        }

    }

}

Conclusion:

enter image description here

I executed the code in debug, and LineWrapCellRenderer is not called for data rows. If I take the code, I will get a regular table, but I will not wrap it in the header. Is this a recognized problem or am I missing something?

Any help appreciated

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1 answer

You can easily create multi-line headers.

Swing, HTML-. HTML <br>, , / .

, ( ):

String[] columnNames = {
    "<html>First<br>column</html>",
    "<html>Second<br>column</html>",
    "<html>Third<br>column</html>"
};

2 . / , HTML-.

: . , 2 . 1 , : "<html>Select<br>&nbsp;</html>"

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