如何访问JPanel？
我试图在 SingleFrameApplication 的 JPanel 中绘制一个简单的指针，0..360 度。 我使用的是 NetBeans IDE 6.9.1，因为它有一个很好的 Swing 容器、控件、菜单等调色板。 我希望 DrawPointer 接口是这样的，因为会有多个 [指针]：
DrawPointer(JPanel panel, double degrees);
但是 JPanel 被 IDE 生成的代码声明为私有，如下所示：
public class MyView extends FrameView {
public MyView(SingleFrameApplication app) {
super(app);
initComponents();
...
private void initComponents() {
...
private javax.swing.JPanel jPanelA;
...
How do I access the JPanel to draw in it if it is private ？
I am trying to draw a simple pointer, 0..360 degrees, in a JPanel on a SingleFrameApplication.
I am using NetBeans IDE 6.9.1 since it has a nice Palette of Swing Containers, Controls, Menus, etc.
I'd like the DrawPointer interface to be something like this since there will be more than one [pointer]:
DrawPointer(JPanel panel, double degrees);
but the JPanel is declared private by IDE generated code like this:
public class MyView extends FrameView {
public MyView(SingleFrameApplication app) {
super(app);
initComponents();
...
private void initComponents() {
...
private javax.swing.JPanel jPanelA;
...
How do I access the JPanel to draw in it if it is private?
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评论（2）
如果您唯一关心的是
private，您可以在 netbeans 中更改它，If that being
privateis your sole concern, you can change that in netbeans ,您向
MyView类添加一个返回jPanelA的方法（就此而言，可能已经有这样的方法，您检查过自动生成的代码吗？）you add a method to your
MyViewclass which returnsjPanelA(for that matter there could already be a method like that, have you checked the autogenerated code?)