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我已經創建了一個帶有三個JList列表的JDialog。第一列表（名爲FirstList）中的行的選擇更新第二列表（第二列表）的內容，並且第二列表中的行的選擇更新第三列表（第三列表）的內容。在ThirdList I類已包括下面的方法：來自ListSelectionListener接口的valueChanged方法中的問題
public void addRowsSelected(int format_row, int pathway_row){
first_list_selected_row = fl_row;
second_list_selected_row = sl_row;
ListSelectionModel listSelectionModel = this.getSelectionModel();
listSelectionModel.addListSelectionListener(new ThirdListSelectionListener(dialog, first_list_selected_row, second_list_selected_row));
}
然後，我已經創建了ThirdListSelectionListener類，這是以下內容：
package eu.keep.gui.mainwindow.menubar.renderfile;
import java.io.IOException;
import java.util.List;
import java.util.ListIterator;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import eu.keep.characteriser.registry.Pathway;
public class ThirdListSelectionListener implements ListSelectionListener{
private ContentGenerated content;
public EmulatorList emulator_list;
private int first_list_selected_row;
private int second_list_selected_row;
private FirstList first_list;
private SecondList second_list;
private ThirdList third_list;
public ThirdListSelectionListener(MyDialog dialog, int first_list_selected_row, int second_list_selected_row){
this.content = dialog.content;
this.first_list_selected_row = first_list_selected_row;
this.second_list_selected_row = second_list_selected_row;
this.first_list = dialog.firstList;
this.second_list = dialog.secondList;
this.third_list = dialog.thirdList;
System.out.println("1. The first list row selected is "+this.first_list_selected_row);
System.out.println("2. The second list row selected is "+this.second_list_selected_row);
}
public void valueChanged(ListSelectionEvent e){
if (e.getValueIsAdjusting())
return;
Object source = e.getSource();
ListSelectionModel list = (ListSelectionModel)e.getSource();
if (list.isSelectionEmpty()) {
}else{
//int selected_row = list.getMinSelectionIndex();
try {
System.out.println("first: "+first_list_selected_row);
System.out.println("second: "+second_list_selected_row);
//System.out.println("third: "+selected_row);
// DO SOMETHING HERE
} catch (IOException e1) {
}
}
}
}
現在的問題：如果我第一選擇，例如第二從第一個列表行，從第二列表中的第二排和第三列表中的第二排，我會得到，正如所料，下面的消息：
1. The first list row selected is 2
2. The second list row selected is 2
first: 2
second: 2
third: 2
但是，如果後不久，我從第二個列表中選擇第一行，然後我再次選擇從第三個列表我得到以下輸出第二行：
1. The first list row selected is 2
2. The second list row selected is 1
first: 2
second: 2
third: 2
而不必「第二：1」的，我一直有「第二：2」。我相信在ThirdListSelectionListener構造函數中更新second_list_selected_row，但它在valueChanged方法中不會更改。有人可以告訴我這個問題的原因，以及如何解決它？提前致謝！！