java - 从其内部类访问类对象

Question

此方法在 JFrame 对象内部，如何将该 JFrame 对象作为参数传递给其内部类中的方法？我的代码是:评论解释了我有兴趣做的事情:

public void runTime(){                ActionListener action = new ActionListener(){            public void actionPerformed(ActionEvent e){                count++;                                text.setText(new Integer(count).toString());                while (count==2012){                    //I want to pass the frame that holds this rather than null, how it is possible?                    JOptionPane.showMessageDialog(null, "HelloEnd", "End of World", JOptionPane.INFORMATION_MESSAGE, new ImageIcon("explode.jpg"));                    break;                }            }        };        tr = new Timer(1000,action);        tr.start();    } 

Answer 1

希望这个问题不是 answered before .无论如何，尝试

 JOptionPane.showMessageDialog(JFrame.this, "HelloEnd", "End of World", JOptionPane.INFORMATION_MESSAGE, new ImageIcon("explode.jpg"));