class MyButton extends Button implements ActionListener
{
    String name;
    TextField text;
    Container con;
    MyButton(String s,Container con)
    {
        super(s);
        this.con=con;
        text=new TextField(8);
        text.addActionListener(this);
        this.addActionListener(this);
        con.add(text);
        con.add(this);
    }
    public void actionPerformed(ActionEvent e)
    {
        name=text.getText();
        this.setLabel(name);
        con.validate();
    }
}
红色字体的这两句代码怎么理解？

谢谢你的解释