JTable用AbstractTableModel刪除多行

Question

我無法讓我的刪除功能正常工作。我有一個帶有customTableModel的JTable，擴展了AbstractTableModel。當我刪除一行時，它可以正常工作，但只要我嘗試一次刪除多行，只是其中一部分被刪除。

我的代碼如下：

1）GUI類主要方法：

package jtabletest; 

import java.awt.BorderLayout; 
import java.awt.FlowLayout; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.util.ArrayList; 

import javax.swing.*; 

@SuppressWarnings("serial") 
public class TableDeletingTest extends JFrame { 

    private String[] columnNames = { "Selection", "ID" }; 
    private ArrayList<TableTestData> data; 
    private JTable table; 

    private JScrollPane scp; 
    private JPanel pnlControls; 
    private JButton btnDelete; 

    public TableDeletingTest() { 
     setDefaultCloseOperation(EXIT_ON_CLOSE); 

     createTestData(5); 
     constructTable(); 
     createGUI(); 
     setListeners(); 

     pack(); 
     setLocationRelativeTo(null); 
     setVisible(true); 
    } 

    private void createGUI() { 
     scp = new JScrollPane(table); 
     pnlControls = new JPanel(new FlowLayout(FlowLayout.CENTER)); 
     btnDelete = new JButton("delete"); 
     add(scp, BorderLayout.CENTER); 
     add(pnlControls, BorderLayout.SOUTH); 
     pnlControls.add(btnDelete); 
    } 

    private void createTestData(int length) { 
     data = new ArrayList<TableTestData>(); 
     for (int i = 0; i < length; i++) { 
      data.add(new TableTestData(i)); 
     } 
    } 

    private void constructTable() { 
     MyTableTestModel model = new MyTableTestModel(data, columnNames); 
     table = new JTable(model); 
    } 

    private void setListeners() { 
     btnDelete.addActionListener(new ActionListener() { 

      @Override 
      public void actionPerformed(ActionEvent e) { 
       for (int i = 0; i < data.size(); i++) { 
        if (data.get(i).isSelected()) { 
         ((MyTableTestModel) table.getModel()).removeRow(i); 
        } 
       } 
      } 
     }); 
    } 

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

      @Override 
      public void run() { 
       new TableDeletingTest(); 
      } 
     }); 
    } 

} 

2.）型號

package jtabletest; 

import java.util.ArrayList; 

import javax.swing.table.AbstractTableModel; 

@SuppressWarnings("serial") 
public class MyTableTestModel extends AbstractTableModel { 

    private ArrayList<TableTestData> data; 
    private String[] columnNames; 

    public MyTableTestModel(ArrayList<TableTestData> data, String[] columnNames) { 
     this.data = data; 
     this.columnNames = columnNames; 
    } 

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

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

    @Override 
    public String getColumnName(int col) { 
     return columnNames[col]; 
    } 

    @Override 
    public Object getValueAt(int rowIndex, int columnIndex) { 
     switch (columnIndex) { 
     case 0: 
      return data.get(rowIndex).isSelected(); 
     case 1: 
      return data.get(rowIndex).getId(); 
     default: 
      return -1; 
     } 
    } 

    @Override 
    public Class<?> getColumnClass(int column) { 
     return getValueAt(0, column).getClass(); 
    } 

    @Override 
    public boolean isCellEditable(int row, int column) { 
     return column == 0; 
    } 

    @Override 
    public void setValueAt(Object value, int row, int column) { 
     if (value instanceof Boolean && column == 0) { 
      data.get(row).setSelected((boolean) value); 
      fireTableCellUpdated(row, column); 
     } 
    } 

    public void removeRow(int row) { 
     data.remove(row); 
     fireTableRowsDeleted(row, row); 
    } 
} 

3.）表資料：

package jtabletest; 

public class TableTestData { 

    private int id; 
    private boolean selected; 

    public TableTestData(int id) { 
     this.id = id; 
    } 

    public int getId() { 
     return id; 
    } 

    public void setId(int id) { 
     this.id = id; 
    } 

    public boolean isSelected() { 
     return selected; 
    } 

    public void setSelected(boolean selected) { 
     this.selected = selected; 
    } 

} 

任何人都知道我在做什麼克錯了？

在此先感謝！

Answer 1

在本節：

@Override 
public void actionPerformed(ActionEvent e) { 
    for (int i = 0; i < data.size(); i++) { 
     if (data.get(i).isSelected()) { 
      ((MyTableTestModel) table.getModel()).removeRow(i); 
     } 
    } 
} 

開始從終端和重複，以開始刪除，因爲當你刪除，它是從data刪除元素，而當你迭代到下一個你跳過某些行元素（通過i++）。替換爲：

@Override 
public void actionPerformed(ActionEvent e) { 
    for (int i = data.size()-1; i >= 0; --i) { 
     if (data.get(i).isSelected()) { 
      ((MyTableTestModel) table.getModel()).removeRow(i); 
     } 
    } 
}