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POhow can i use removeTableModelListener
 

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  1. POhow can i use removeTableModelListener
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    <p>I implemented "addTableModelListener" at run-time in my table-model, but I want to create one more control for removing it. I have searched Google, but I haven't found any suitable logic to implement removing the table model listener.</p> <p>Please help me implement the <code>removeTableModelListener</code> method.</p> <pre><code>import java.awt.Component; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.ResultSet; import java.sql.Statement; import javax.swing.DefaultComboBoxModel; import javax.swing.JButton; import javax.swing.JComboBox; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.ScrollPaneConstants; import javax.swing.event.TableModelEvent; import javax.swing.event.TableModelListener; import javax.swing.table.DefaultTableModel; import javax.swing.table.TableCellRenderer; import javax.swing.table.TableModel; public class CheckList extends JPanel { private static final long serialVersionUID = 1L; /** * Create the panel. */ static JTable table; public int row; public int column; static MyTableModel model; static int t; public CheckList() { try { model = new MyTableModel(); table = new JTable(model); table.setPreferredScrollableViewportSize(new Dimension(100, 70)); table.setFillsViewportHeight(true); table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS); // Create the scroll pane and add the table to it. JScrollPane scrollPane = new JScrollPane(table); scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS); scrollPane.setBounds(10, 132, 998, 522); setLayout(null); add(scrollPane); JButton btnNewButton = new JButton("New button"); btnNewButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if (model.getRowCount() != 0) { model.getDataVector().removeAllElements(); } model.addrows(); } }); btnNewButton.setBounds(868, 33, 89, 23); add(btnNewButton); final JComboBox comboBox = new JComboBox(); comboBox.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { switch (comboBox.getSelectedIndex()) { case 0: { model.removeTableModelListener(table.getModel()); } case 1: { model.addTableModelListener(new TableModelListener() { public void tableChanged(TableModelEvent e) { try {// TODO Auto-generated method stub row = e.getFirstRow(); column = e.getColumn(); TableModel mod = (TableModel) e.getSource(); String columnName = mod.getColumnName(column); Object data = mod.getValueAt(row, column); System.out.println(columnName + " " + data + " row is " + row); System.out.println("value at" + model.getValueAt(row, 4)); Boolean status = (Boolean) data; String check; // int value = (Integer) getValueAt(row, 4); // System.out.println(value); if (status == true) { check = "Recieved"; } else { check = "not Recieved"; } System.out.println(check); // int row1 = row + 1; model.st.executeUpdate("update temp1 set [" + columnName + "]='" + check + "' where [Packet ID]=" + model.getValueAt(row, 4) + ""); } catch (Exception t) { System.out.println(t); } } }); break; } } } }); comboBox.setModel(new DefaultComboBoxModel(new String[]{"view", "edit"})); comboBox.setBounds(158, 48, 81, 20); add(comboBox); JLabel lblNewLabel = new JLabel("Mode"); lblNewLabel.setBounds(102, 51, 46, 14); add(lblNewLabel); } catch (Exception e) { System.out.println(e); } } public class MyTableModel extends DefaultTableModel implements TableCellRenderer, TableModelListener { /** * */ public void add() { addRow(new Object[]{"", "", " ", " ", "", " ", new Boolean(status)}); } public void addrows() { try { st = login.con.createStatement(); ResultSet re = st.executeQuery("select * FROM temp1 where operator=" + managment.log_id + ""); while (re.next()) { String n1 = re.getString("customer ID"); String n2 = re.getString("customer name"); String n3 = re.getString("packet id"); String n4 = re.getString("packet type"); String n5 = re.getString("reciever id"); String n6 = re.getString("reciever name"); String n7 = re.getString("reciever status"); if (n7.equals("Recieved")) { status = true; } else { status = false; } addRow(new Object[]{"" + n1 + "", " " + n2 + "", " " + n5 + "", " " + n6 + "", " " + n3 + "", " " + n4 + "", new Boolean(status)}); } } catch (Exception e) { // TODO Auto-generated catch block System.out.println(e); } } private static final long serialVersionUID = 1L; /* * */ public Statement st; boolean status; public int row; public int column; /** * */ public MyTableModel() { // TODO Auto-generated constructor stub addColumn("sender ID"); addColumn("sender Name"); addColumn("Recieving ID"); addColumn("Reciever Name"); addColumn("Packet ID"); addColumn("Packet Category"); addColumn("reciever status"); } @Override public int getColumnCount() { // TODO Auto-generated method stub return super.getColumnCount(); } @Override public int getRowCount() { // TODO Auto-generated method stub return super.getRowCount(); } @Override public String getColumnName(int column) { // TODO Auto-generated method stub return super.getColumnName(column); } @Override public Object getValueAt(int row, int column) { // TODO Auto-generated method stub return super.getValueAt(row, column); } @Override public boolean isCellEditable(int row, int column) { return super.isCellEditable(row, column); } public Class&lt;?&gt; getColumnClass(int c) { return getValueAt(0, c).getClass(); } @Override public void setValueAt(Object aValue, int row, int column) { // TODO Auto-generated method stub super.setValueAt(aValue, row, column); // System.out.println("new value"); // printDebugData(); } @Override public Component getTableCellRendererComponent(JTable arg0, Object arg1, boolean arg2, boolean arg3, int arg4, int arg5) { // TODO Auto-generated method stub return null; } @Override public void tableChanged(TableModelEvent arg0) { // TODO Auto-generated method stub } } // @Override // public void addTableModelListener(TableModelListener l) { // // TODO Auto-generated method stub // // super.addTableModelListener(new TableModelListener() { // // @Override // public void tableChanged(TableModelEvent e) { // // try {// TODO Auto-generated method stub // row = e.getFirstRow(); // column = e.getColumn(); // TableModel mod = (TableModel) e.getSource(); // String columnName = mod.getColumnName(column); // Object data = mod.getValueAt(row, column); // System.out.println(columnName + " " + data // + " row is " + row); // System.out.println("value at" + getValueAt(row, 4)); // Boolean status = (Boolean) data; // String check; // // int value = (Integer) getValueAt(row, 4); // // System.out.println(value); // if (status == true) { // check = "Recieved"; // // } else { // check = "not Recieved"; // } // System.out.println(check); // // int row1 = row + 1; // st.executeUpdate("update temp1 set [" + columnName // + "]='" + check + "' where [Packet ID]=" // + getValueAt(row, 4) + ""); // // } catch (Exception t) { // System.out.println(t); // } // // } // }); // } /* * private void printDebugData() { int numRows = getRowCount(); int numCols * = getColumnCount(); * * for (int i = 0; i &lt; numRows; i++) { System.out.print(" row " + i + ":"); * for (int j = 0; j &lt; numCols; j++) { System.out.print(" " + getValueAt(i, * j)); } System.out.println(" "); * * } * * System.out.println("--------------------------"); } */ } </code></pre>
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      1. POhow can i use removeTableModelListener
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