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class A extends JFrame implements ActionListener
public void actionPerformed(ActionEvent e)
{
int result = Integer.parseInt(t1.getText())
}
不是类,是接口
[quote=引用 4 楼 u012724379 的回复:] 实现ActionListener:class A extends JFrame implements ActionListener
public void actionPerformed(ActionEvent e) { int result = Integer.parseInt(t1.getText()) }
B1.addActionListener(F);// 这样就可以了
实现ActionListener:class A extends JFrame implements ActionListener
public void actionPerformed(ActionEvent e) { int result = Integer.parseInt(t1.getText()) }
public class MJYS_Frame extends JFrame implements ActionListener
{
public static void main(String[] args) {
MJYS_Frame F = new MJYS_Frame();
F.setLayout(null);
{
Button B1 = new Button();
B1.setBounds(0, 0, 120, 25);
B1.addActionListener(this);// Can not use this in a static context,怎样设置Button的监听?
F.add(B1);
}
// ....
}
实现ActionListener:class A extends JFrame implements ActionListener
public void actionPerformed(ActionEvent e) { int result = Integer.parseInt(t1.getText()) }