菜鸟的菜问题,希望指点!

Question

汗jishuqi one= new jishuqi();
label.setText(""+one.getshu());

Answer 1

jishuqi one= new jishuqi();
每次button都建个新的实例，怎么加都不会变。

Answer 2

楼上说的对，你不用在button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
jishuqi one= new jishuqi();
label.setText(""+one.getshu());
}
});这里new jishuqi()这个类，你要想调用它的方法的话可以用this.getshu();上面的代码改为：
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{ label.setText(""+this.getshu());
}
});