如何自動選擇JTable中最後插入的行？

Question

由於可以對JTable進行排序。 如何設置它自動選擇最後插入的行，每當插入一行？

感謝

Answer 1

你的TableModel可以retun行數和新/加可能是最後一次使用convertRowIndexToView您可以在TableView中得到行，然後傳遞給changeSelection 公共無效changeSelection（INT的rowIndex，INT columnIndex，布爾切換，布爾延長）

編輯：例如（對於享受harcoded numbersOfRows - 3代替正確numbersOfRows - 1）：

import java.awt.*; 
import java.awt.event.ActionEvent; 
import javax.swing.*; 
import javax.swing.UIManager.LookAndFeelInfo; 
import javax.swing.event.*; 
import javax.swing.table.*; 

public class TestTableRowTable { 

    public static void main(String[] args) { 
     EventQueue.invokeLater(new Runnable() { 

      @Override 
      public void run() { 
       try { 
        // UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); 
        for (LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) { 
         if (info.getName().equals("Nimbus")) { 
          UIManager.setLookAndFeel(info.getClassName()); 
          break; 
         } 
        } 
       } catch (Exception e1) { 
        e1.printStackTrace(); 
       } 

       final JTable table = new JTable(10, 6); 
       for (int i = 0; i < table.getRowCount(); i++) { 
        table.setValueAt(i, i, 0); 
       } 
       final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(table.getModel()); 
       table.setRowSorter(sorter); 
       final AbstractTableModel model = new AbstractTableModel() { 

        private static final long serialVersionUID = 1L; 

        @Override 
        public int getColumnCount() { 
         return 1; 
        } 

        @Override 
        public Object getValueAt(int row, int column) { 
         return table.convertRowIndexToModel(row); 
        } 

        @Override 
        public int getRowCount() { 
         return table.getRowCount(); 
        } 
       }; 
       JTable headerTable = new JTable(model); 
       headerTable.setShowGrid(false); 
       headerTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); 
       headerTable.setPreferredScrollableViewportSize(new Dimension(30, 0)); 
       headerTable.getColumnModel().getColumn(0).setPreferredWidth(30); 
       headerTable.getColumnModel().getColumn(0).setCellRenderer(new TableCellRenderer() { 

        @Override 
        public Component getTableCellRendererComponent(JTable x, Object value, boolean isSelected, boolean hasFocus, int row, int column) { 

         boolean selected = table.getSelectionModel().isSelectedIndex(row); 
         Component component = table.getTableHeader().getDefaultRenderer().getTableCellRendererComponent(table, value, false, false, -1, -2); 
         ((JLabel) component).setHorizontalAlignment(JLabel.CENTER); 
         if (selected) { 
          component.setFont(component.getFont().deriveFont(Font.BOLD)); 
         } else { 
          component.setFont(component.getFont().deriveFont(Font.PLAIN)); 
         } 
         return component; 
        } 
       }); 
       table.getRowSorter().addRowSorterListener(
         new RowSorterListener() { 

          @Override 
          public void sorterChanged(RowSorterEvent e) { 
           model.fireTableDataChanged(); 
          } 
         }); 
       table.getSelectionModel().addListSelectionListener(
         new ListSelectionListener() { 

          @Override 
          public void valueChanged(ListSelectionEvent e) { 
           model.fireTableRowsUpdated(0, model.getRowCount() - 1); 
          } 
         }); 
       JScrollPane pane = new JScrollPane(table); 
       pane.setRowHeaderView(headerTable); 
       JFrame frame = new JFrame("Test"); 
       frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); 
       frame.getContentPane().add(pane); 
       frame.getContentPane().add(new JButton(new AbstractAction("Toggle filter") { 

        private static final long serialVersionUID = 1L; 
        private RowFilter<TableModel, Object> filter = new RowFilter<TableModel, Object>() { 

         @Override 
         public boolean include(javax.swing.RowFilter.Entry<? extends TableModel, ? extends Object> entry) { 
          return ((Number) entry.getValue(0)).intValue() % 2 == 0; 
          //return ((String) entry.getValue(0)).length()>0 ; 
          //return ((Date) entry.getValue(0)).getTime()< ; 
         } 
        }; 

        @Override 
        public void actionPerformed(ActionEvent e) { 
         if (sorter.getRowFilter() != null) { 
          sorter.setRowFilter(null); 
          TableModel tblModel = table.getModel(); 
          int numbersOfRows = 0; 
          numbersOfRows = tblModel.getRowCount(); 
          int lastRow = 0; 
          lastRow = table.convertRowIndexToView(numbersOfRows - 3); 
          table.changeSelection(lastRow, 0, false, false); 
         } else { 
          sorter.setRowFilter(filter); 
         } 
        } 
       }), BorderLayout.PAGE_END); 
       frame.pack(); 
       frame.setLocationRelativeTo(null); 
       frame.setVisible(true); 
      } 
     }); 
    } 

    private TestTableRowTable() { 
    } 
} 

Answer 2

這是很難回答，因爲你沒有提供任何代碼，但是，如果你使用的JTable的一些模型，你可以寫一些適配器插入的方法，我的意思是public void insertRow(int row, Vector rowData)。這裏是現在的行數，使用這個數字你可以選擇行。你知道如何選擇行嗎？