Jan 2, 2011 · You must remove the data from the TableModel used for the table. If using the DefaultTableModel , just set the row count to zero. This will delete the rows and fire the TableModelEvent to update the GUI.

Simply keep removing the table model's first row until there are no more rows left. // clean table DefaultTableModel myTableModel = (DefaultTableModel) this.myjTable.getModel(); while (myTableModel.getRowCount() > 0) { myTableModel.removeRow(0); }

Iterate over the model.removeRow(index) to remove. Define your own model that wraps a List/Set and expose the clear method. I think you meant that you want to clear all the cells in the jTable and make it just like a new blank jTable. For an example, if …

To clear the content of a JTable in Java, you typically interact with its underlying data model. The most common model used for JTables is DefaultTableModel, which provides methods to manipulate the rows of the table easily. model.setRowCount(0); // Clears all rows from the JTable.

Use the setRowCount(0) method of the DefaultTableModel to clear all rows quickly. Use the removeRow(int rowIndex) method in a loop if you need to perform additional actions on each row before removal.

Constructs a default DefaultTableModel which is a table of zero columns and zero rows. DefaultTableModel public DefaultTableModel(int rowCount, int columnCount)

Use `model.setRowCount (0)` method to remove all rows in the table. Alternatively, you can call `model.fireTableDataChanged ()` after manipulating the data. Mistake: Not casting the model to DefaultTableModel before clearing it.

Nov 15, 1999 · table.setNumRows(0); // this will erase all the contents in your data vector // and set data vector's size to 0 or if you want to clear the rows ... for( int nRow = 0 ; nRow < table.getRowCount() ; nRow++ ){for( int nColumn = 0 ; nColumn …

Jun 4, 2011 · We can use DefaultTableModel.setRowCount (int) for this purpose, refering to Java's Documentation: public void setRowCount (int rowCount) Sets the number of rows in the model.

Jan 29, 2020 · The DefaultTableModel class in Java is a subclass of the AbstractTableModel that stores data for the JTable when no table model is specifically defined.