从JOptionPane返回值

Question

我做了一个JOptionPane其中包含一个JPanel。该面板包含一个按钮和一个Jtable。

JPanel p = atomicAttack.getPanel(); //make the panel and return it 
JOptionPane.showOptionDialog(null, p,"Atomic Attacks", 
      JOptionPane.DEFAULT_OPTION,JOptionPane.INFORMATION_MESSAGE, 
      null, new Object[]{}, null); 

和里面的JButton我有：

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) { 
    selectedId=jTable1.getValueAt(jTable1.getSelectedRow(), 0).toString(); 
} 

我需要当用户点击该按钮时，JOption得到关闭从JOptionPane的的selectedId获取回报？

我看过this，但它不完全是我在找的东西。 因为按钮不会为我返回值。

Answer 1

专注于模型和事情会更容易。

public static void main(String[] args) { 
    DefaultTableModel tableModel = new DefaultTableModel(); 
    tableModel.addColumn("Selection", new Object[] { "A", "B", "C" }); 

    JTable table = new JTable(tableModel); 
    ListSelectionModel selectionModel = table.getSelectionModel(); 

    JPanel p = new JPanel(new BorderLayout()); 
    p.add(table, BorderLayout.CENTER); 

    int option = JOptionPane.showConfirmDialog(null, p, "Atomic Attacks", JOptionPane.OK_CANCEL_OPTION, 
      JOptionPane.INFORMATION_MESSAGE); 

    if (JOptionPane.OK_OPTION == option) { 
     printSelection(selectionModel, tableModel); 
    } else { 
     selectionModel.clearSelection(); 
    } 

} 

private static void printSelection(ListSelectionModel selectionModel, TableModel tableModel) { 
    for (int i = selectionModel.getMinSelectionIndex(); i <= selectionModel.getMaxSelectionIndex(); i++) { 
     if (selectionModel.isSelectedIndex(i)) { 
      Object selectedValue = tableModel.getValueAt(i, 0); 
      System.out.println(selectedValue); 
     } 
    } 
} 

如果现在选择多行

，然后按OK按钮，结果将是

A 
C 

如果你愿意，你可以只设置

单个选择

ListSelectionModel selectionModel = table.getSelectionModel();  
selectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);