Class is not abstract and does not override abstract method AWT Program

Question

import java.awt.*;
import java.awt.event.*;

public class QuadraticSolver extends Frame implements ActionListener, WindowListener
{
private TextField tfX2;
private TextF         


        

Answer 1

Since QuadraticSolver implements ActionListener, it should implement actionPerformed.

You implemented that method in an anonymous class.

To solve it, either add an implementation of actionPerformed to QuadraticSolver or don't require QuadraticSolver to implement that interface.