CODEWITHSUNDEEP
javaswingjtablerowrows
Guolf3377
Guolf3377

Reputation: 107

How to make a multiline cell in Jtable

I wanted to know if there is a way to do this in a table with Java Swing.

Image for Example

I'm working with tables using Vector<Vector<String>> for passing each column data in a DefaultTableModel Object, but for this I don't know what I have to use.

Note: The table data is added dynamically during runtime.

Upvotes: 2

Views: 4252

Answers (3)

حمدي هيكل
حمدي هيكل

Reputation: 21

public void resizeCellWidthAndHieght(JTable table, int HorizontalAlignment, int VerticalAlignment) {
    DefaultTableCellRenderer defaultTableCellRenderer = new DefaultTableCellRenderer();
        defaultTableCellRenderer.setHorizontalAlignment(HorizontalAlignment);
        defaultTableCellRenderer.setVerticalAlignment(VerticalAlignment);
    table.setAutoResizeMode(table.AUTO_RESIZE_OFF);
    final TableColumnModel columnmodel = table.getColumnModel();
    int HieghtArray[] = new int[table.getRowCount()] ;
    for (int column = 0; column < table.getColumnCount(); column++) {
        table.getColumnModel().getColumn(column).setCellRenderer(defaultTableCellRenderer);
        int width = 15; // Min width
        int height = 25; // Min width
        for (int row = 0; row < table.getRowCount(); row++) {
            TableCellRenderer renderer = table.getCellRenderer(row, column);
            Component comp = table.prepareRenderer(renderer, row, column);
            width = Math.max(comp.getPreferredSize().width +1 , width);
            height = Math.max(comp.getPreferredSize().height +4 , HieghtArray[row]);
            if (HieghtArray[row]< height) {
                HieghtArray[row] = height;
            }

        }
        if(width > 300)
            width=300;
        columnmodel.getColumn(column).setPreferredWidth(width);
    }
    for (int i = 0; i < table.getRowCount(); i++) {
        try {
            table.setRowHeight(i, HieghtArray[i]);
        } catch (Exception e) { }
    }
}

Upvotes: 0

حمدي هيكل
حمدي هيكل

Reputation: 21

javax.swing.JTable jTableReport = new javax.swing.JTable();// new JTable
javax.swing.table.DefaultTableModel TableModel = new javax.swing.table.DefaultTableModel(ArrayListTable.size(),Header.length);//new TableModel
//Now you must be add your data inside TableModel
    jTableReport.setModel(TableModel);//setModel inside JTable

int RowWidth = 90;//Width You want to be
int RowHight = 25;//Hight of one line

for (int C = 0; C < jTableReport.getColumnCount(); C++) {
    for (int R = 0; R < jTableReport.getRowCount(); R++) {
        Object RowValue = jTableReport.getValueAt(R, C);
        int lengthRow = String.valueOf(RowValue).length();
        if (lengthRow>RowWidth) {
            int NumLines = lengthRow/RowWidth;
                    if (NumLines == 1) {
                        NumLines = 2;
                    }
            int begainIndex = 0;
            int endIndex = RowWidth;
            String NewRowValue = String.valueOf(RowValue);
            for (int i = 1; i < NumLines; i++) {
                if (i==1) {
                    NewRowValue = "<html>"+(String.valueOf(RowValue).substring(begainIndex, endIndex))+"<br>";
                }else if (i == NumLines) {
                    NewRowValue = NewRowValue + (String.valueOf(RowValue).substring(begainIndex, endIndex))+"</html>";
                }else {
                    NewRowValue = NewRowValue + (String.valueOf(RowValue).substring(begainIndex, endIndex))+"<br>";
                }

                begainIndex = begainIndex + RowWidth;
                endIndex = endIndex + RowWidth;
                i++;
            }
            jTableReport.setValueAt(NewRowValue, R, C);
            jTableReport.setRowHeight(R, NumLines*RowHight);
        }
    }
}

Upvotes: 0

Channa Jayamuni
Channa Jayamuni

Reputation: 1905

You have to use customized TabelCellRenderer with JList view. Following code should work.

public class VectorTableCellRenderer extends JList<String> implements TableCellRenderer {

    @Override
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
        if (value instanceof Vector) {
            setListData((Vector) value);
        }

        if (isSelected) {
            setBackground(UIManager.getColor("Table.selectionBackground"));
        } else {
            setBackground(UIManager.getColor("Table.background"));
        }

        return this;
    }
}

EDIT: How to use VectorTableCellRenderer

    VectorTableCellRenderer renderer = new VectorTableCellRenderer();

    //set TableCellRenderer into a specified JTable column class
    table.setDefaultRenderer(Vector.class, renderer);

    //or, set TableCellRenderer into a specified JTable column
    table.getColumnModel().getColumn(columnIndex).setCellRenderer(renderer);

This is my tested output.

enter image description here

Upvotes: 2

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