重载文本框, 重载文本框获取焦点和焦点离开的事件,以及格式化数据

Question

JTextField t=new JTextField();
            t.addFocusListener(new FocusListener(){
                public void focusLost(FocusEvent e){
                    
                }
                public void focusGained(FocusEvent e){
                    
                }
            } );

Answer 1

TO BasaraTracy(不屈斗志) 
focusLost和focusGained是JTextField的方法吗.我怎么才能获取当前控件啊.

Answer 2

this.addFocusListener(new FocusListener() {
                public void focusLost(FocusEvent e){                
                 LostFocus();
                }
                public void focusGained(FocusEvent e){
                 GetFocus();
                }
            } );this.getText();