使用匿名类的时候 可以集成接口吗？
        TextField tv2 = new TextField(10);
        tv2.addActionListener(new Policeman implements ActionListener()
                {
            
                    public void actionPerformed( ActionEvent e )
                    {
                        String number = e.getActionCommand();
                        int n = Integer.parseInt(number);
                        int m = n*n*n;
                        System.out.println("lifangshi"+m);
                    }
        });

	
		
			

        
				
				
					
						
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public class main
{
    public static void mina (String args[])
    {
        new yxf("yxf");
    }
}

class SB extends Button implements ActionListener
{
    String name;
    TextField tv;
    Container con;
    SB( String s, Container con )
    {
        super(s);//设置button的label属性
        this.con = con;
        tv = new TextField(10);
        tv.addActionListener(this);
        this.addActionListener(this);
        con.add(tv);//把tv加载到容器当中
        con.add(this);//吧button加载到容器当中
    }
    @Override
    public void actionPerformed(ActionEvent e)
    {
        // TODO Auto-generated method stub
        name = tv.getText().toString();
        this.setLabel(name);
        con.validate();//显示改变
    }
   
}

class yxf extends Frame
{
    yxf(String s)
    {
        setTitle(s);
        setLayout(new FlowLayout());
        Toolkit lk = getToolkit();
        Dimension ss = lk.getScreenSize();
        setBounds(100, 100, ss.width/2, ss.height/2);
       
        SB sb = new SB(s, this);
       
        setVisible(true);
        validate();
    }
}

请问 这个 该怎么改？

    public static void main(String args[])

恩 记住啦   

谢谢