Java 我的JList无法与另一个JList进行反应,换句话说,它们无法以某种方式连接,当我单击第二个JList时,它的值为空
如何制作3个相互连接的JListJava 我的JList无法与另一个JList进行反应,换句话说,它们无法以某种方式连接,当我单击第二个JList时,它的值为空,java,swing,actionlistener,jlist,listselectionlistener,Java,Swing,Actionlistener,Jlist,Listselectionlistener,如何制作3个相互连接的JList private JList style = new JList(new String[] { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday","Saturday","Sunday" }); private JList style2 = new JList(new String[] {"Lucy","bin"}); public void valueChangedListSelectionEve
private JList style = new JList(new String[] { "Monday", "Tuesday",
"Wednesday", "Thursday", "Friday","Saturday","Sunday" });
private JList style2 = new JList(new String[] {"Lucy","bin"});
public void valueChangedListSelectionEvent evt{
更新
}
public void updateFont() {
String m = (String) style.getSelectedValue();
System.out.println(m);
if(style.getSelectedValue()== "Monday")
{
style2.setListData(new String[]{"Lucy"});
String mn = (String) style2.getSelectedValue();
System.out.println(mn);
//style3.setListData(st.getTime(mn));
}
if(style.getSelectedValue()== "Tuesday")
{
style2.setListData(new String[]{"Lucy"});
}
if(style.getSelectedValue()== "Wednesday")
{
style2.setListData(st.getMovieList());
}
if(style.getSelectedValue()== "Thursday")
{
style2.setListData(st.getMovieList());
}
if(style.getSelectedValue()== "Friday")
{
style2.setListData(st.getMovieList());
}
if(style.getSelectedValue()== "Saturday")
{
style2.setListData(new String[] {"Lucy","bin"});
}
if(style.getSelectedValue()== "Sunday")
{
style2.setListData(new String[] {"Lucy","bin"});
}
repaint();
当我们点击第一个列表时,第二个列表是react,第二个和第三个列表也是react,我想做的是,我的源代码只会进入第二个列表,当我点击第二个列表时,它会给出null值,开始看一看。你会想玩ListSelectionListener…mn show值null:1更好请尽快发布一个最小完整的可验证示例。2请参阅&