如何摆脱 JList 的预选

Question

问题是当文件运行时 JList 已经做出了自己的选择，因此当用户做出选择时，列表不再处于正确的位置。最终，我想让它成为一种递归方法，并让用户选择一个单词并将其从列表中删除，直到没有单词为止......有谁知道如何将任何自动选择设置为空？

import java.util.ArrayList;
import java.io.*;

public class Arg{

   public static void main(String[] args) 
   {
       callArray();
   }

   public static void callArray() {

      final JFrame frame = new JFrame();
      JPanel panel = new JPanel();
      final ArrayList alist = new ArrayList();

      alist.add("one");
      alist.add("two");
      alist.add("three");
      alist.add("four");
      alist.add("five");
      alist.add("six");
      alist.add("seven");
      alist.add("eight");

      final JList blist = new JList(alist.toArray());
      blist.clearSelection();

      JScrollPane scroll = new JScrollPane(blist);
      panel.add(blist);
      frame.add(panel);
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setSize(100, 100);
      frame.setVisible(true);

      final PVariable varPass = new PVariable();

      System.out.println(alist);

      blist.addListSelectionListener(new ListSelectionListener() {
         public void valueChanged(ListSelectionEvent e) {
            varPass.selected = blist.getSelectedIndex();
            System.out.println("The value selected is " + alist.get(varPass.selected) + " " + varPass.selected);
            frame.setVisible(false);
         }
      });

      alist.remove(varPass.selected);

      System.out.println(alist);
   }
}

class PVariable {
    static int selected;

    public PVariable() { }
}

Answer 1

有谁知道如何将任何自动选择设置为空？

setSelectedIndex( -1 );