편집 기록

package glephic; import java.awt.Color; import java.awt.Container; import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextField;

public class sums extends JFrame{ private static JTextField TF = new JTextField(20); private static JTextField TA = new JTextField(20); private JButton BT = new JButton("꾸욱");

public sums(){
    setTitle("입력된 값의 1까지의 합");
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container c = getContentPane();
    c.setLayout(new FlowLayout());
    c.add(new JLabel("입력후 버튼을누르세요"));
    c.add(TF);
    c.add(BT);
    c.add(TA);
    c.setBackground(Color.green);

    BT.addActionListener(new ActionListener(){
        public static int actionPerformed(ActionEvent e){ //<-여기에서 오류가납니다
            String from = TF.getText();
            int to = Integer.parseInt(from);
            if(to >=1){
                return (to -1) * to;}
            else{
                return to;
        }       

            from = Integer.toString(to);
            TA.setText(from);
            TF.setText("");
        }
    });

    setSize(250,250);
    setVisible(true);
}

public static void main(String[] args) {
    new sums();
    }
}

오류내용은 This static method cannot hide the instance method from ActionListener 이것 구글링해도 안나오는데 어찌하면 좋을까요.......ㅗㅜㅑ