確認對話框出現多次

Question

我在addListSelectionListener中有一個確認對話框。當我在表格中選擇一行時，這會引發火災。然後出現確認對話框，然後點擊是或否，它會一直出現！

這是我的代碼。

public Reference() { 
    initComponents(); 
    fillTable(); 
    jTable1.getSelectionModel().addListSelectionListener(new ListSelectionListener() { 
     public void valueChanged(ListSelectionEvent e) { 
      int prompt = JOptionPane.showConfirmDialog(null, "Are you sure you want to Check Out this item?", "Warning", JOptionPane.YES_NO_OPTION); 
      if (prompt == 0) { 
       String accessNo = jTable1.getValueAt(jTable1.getSelectedRow(), 0).toString(); 
       String query = "delete from reference where accessNo=" + accessNo + ""; 
       if (DB.executeNonQuery(query) > 0) { 
        JOptionPane.showMessageDialog(null, "Check out Successfull!"); 
        fillTable(); 
       } else { 
        JOptionPane.showMessageDialog(null, "Check out Failed!"); 
       } 
      } 
     } 
    }); 
} 

Answer 1

確保值未在ListSelectionListener

public void valueChanged(ListSelectionEvent e) { 
    if(!e.getValueAdjusting()) { 
     ... 
    } 
} 

價調整：How to Write a List Selection Listener