How do you remove a row from a JTable

[dellyjm]

Hi,

how do you remove a row from a JTable.

Thanks.

Delly.

 

[pedrosolorzano]

Hi dellyjm:

Check the Java api section for AbstractTableModel.

http://java.sun.com/j2se/1.4/docs/api/javax/swing/table/AbstractTableModel.html

It has a method called deleteRow(int index);

Any TableModel should implement this method. The DefaultTableModel for example.

Perhaps you should do a repaint to see the changes on the GUI.

Hope it helps. Pedro Andrés Solorzano
Pontificia Universidad Javeriana
Bogotá, Colombia, SurAmérica.

 

[pedrosolorzano]

Hi dellyjm:

I was in an error. The DefaultTableModel doesn't implement the deleteRow method. You can code your own TableModel to implement it. Here is an example:

class TablaModelo extends AbstractTableModel {
    String[] columnNames = {};
    Vector rows = new Vector();
    Vector clases = new Vector();
    
    public TablaModelo(Vector columnNames, Vector rows){
        String [] cn = new String [columnNames.size()];
        for(int i=0;i<columnNames.size();i++){
        	 cn[i]=(String) columnNames.elementAt(i);
        	 clases.add(String.class);
       	}
        	 
        this.columnNames=cn;
        this.rows=rows;
    }

    public void addRow(Vector r) {
    	rows.add(r);
    }
    
    public void deleteRow(int index) {
    	rows.remove(index);
    }
    
    public void deleteAllRows(){
    	rows.removeAllElements();
    }
    //////////////////////////////////////////////////////////////////////////
    //
    //             Implementation of the TableModel Interface
    //
    //////////////////////////////////////////////////////////////////////////



    public String getColumnName(int column) {
        if (columnNames[column] != null) {
            return columnNames[column];
        } else {
            return &quot;&quot;;
        }
    }

    public Class getColumnClass(int column) {
            return (Class) clases.elementAt(column);
    }

    public void setColumnClass(Class clase, int column){
    	clases.setElementAt(clase,column);
    }

    public boolean isCellEditable(int row, int column) {
            return true;
    }

    public int getColumnCount() {
        return columnNames.length;
    }

    // Data methods

    public int getRowCount() {
        return rows.size();
    }

    public Object getValueAt(int aRow, int aColumn) {
        Vector row = (Vector)rows.elementAt(aRow);
        return row.elementAt(aColumn);
    }

    public void setValueAt(Object value, int row, int column) {
        Vector dataRow = (Vector)rows.elementAt(row);
        dataRow.setElementAt(value, column);
        fireTableChanged(new TableModelEvent(this, row, row, column));

    }
}

You can use TablaModelo to create a new table and call the deleteRow method from the model.

Hope it helps. Pedro Andrés Solorzano
Pontificia Universidad Javeriana
Bogotá, Colombia, SurAmérica.