Why a variable inside a private inner class can't get value of a private variable that has value from AsynCallback method in Gwt?

[Tom]

I found this very weird behavior in Gwt.

Ok, I have a simple TestPresenter.java that have 2 buttons. Button 1 get 
data from DB and return value via Asyncallback method. Button 2 is to 
retrive that value from a private inner class.

private String test1;private String test2;private 
AsyncCallback<GetArticleResult> getArticleCallback=new 
AsyncCallback<GetArticleResult>(){@Override
        public void onFailure(Throwable caught) {
            // TODO Auto-generated method stub
            loadingPresenter.hide();
        }

        @Override
        public void onSuccess(GetArticleResult result) {
            test1=result.getVal();
            test2="123";

        }};private class  InlineHTMLContextMenuHandler implements 
ContextMenuHandler {



        @Override
        public void onContextMenu(ContextMenuEvent event) {
            System.out.println(test1);
            System.out.println(test2);
        }}

Now, i click the Button 1 first & it get Data from DB ok, then I click the 
button 2. Then i get the output:test1=Null; test2="123"; when debugging the 
test1 show real value, not null. For test1 variable, If i access it from a 
method normally then it will be fine but if accessing it from private inner 
class then I can't get its value.

What wrong? this so weird?

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