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Код


public class PointTableModel extends AbstractTableModel {
    
        private ArrayList<Point> alPoints;
        
        public PointTableModel() {
            alPoints = mode ? InitialPointList.getInstance().getAlPoints() : EndPointList.getInstance().getAlPoints();
        }
        
        private ArrayList<TableModelListener> alListeners = new ArrayList<TableModelListener>();
        
        @Override
        public void addTableModelListener(TableModelListener e) {
            alListeners.add(e);
        }

        @Override
        public Class<?> getColumnClass(int arg0) {
            return Double.class;
        }

        @Override
        public int getColumnCount() {
            return 3;
        }

        @Override
        public String getColumnName(int key) {
            switch (key) {
            case 0:
                return "№";
            case 1:
                return "X";
            case 2:
                return "Y";
            case 3:
                return "Z";
            }
            return "";
        }

        @Override
        public int getRowCount() {
            return alPoints.size();
        }

        @Override
        public Object getValueAt(int row, int column) {
            switch (column) {
            case 0:
                return alPoints.get(0).getX();
            case 1:
                return alPoints.get(1).getY();
            case 2:
                return alPoints.get(2).getZ();
            }
            return "";
            
        }

        @Override
        public boolean isCellEditable(int arg0, int arg1) {
            return true;
        }

        @Override
        public void removeTableModelListener(TableModelListener o) {
            alListeners.remove(o);
            
        }
        
        public void redisplay() {
            fireTableDataChanged();
        }
    
    }

Код


final Point point = new Point(new Double(xText.getText()), new Double(yText.getText()));
InitialPointList.getInstance().add(point);
((PointTableModel)table.getModel()).redisplay();