How to Get Project Parameter

Hi everyone,

In my plugin, I'm trying to make a tool window.

    public void createToolWindowContent(Project project, ToolWindow toolWindow)
    {
        myToolWindow = toolWindow;
        this.createTable(project);
        ContentFactory contentFactory = ContentFactory.SERVICE.getInstance();
        Content content = contentFactory.createContent(myToolWindowContent, "", false);
        myToolWindow.getContentManager().addContent(content);
    }

But I need to refresh my table in tool window. So, I need to call createTable method in different classes or methods. But I don't know how to get project parameter.

I tried this but it returns null:

    public void createToolWindowContent(Project project, ToolWindow toolWindow)
    {
        myToolWindow = toolWindow;
        myProject = project
        this.createTable(MyProject);
        ContentFactory contentFactory = ContentFactory.SERVICE.getInstance();
        Content content = contentFactory.createContent(myToolWindowContent, "", false);
        myToolWindow.getContentManager().addContent(content);
    }

When I tried to use myProject as parameter, it returns null.