آلة حاسبة بسيطة باستخدام Java Swing

It looks like you’re facing an issue with the formatting of your Java Swing code. The error message you provided in the screenshot indicates a problem with the format of the ActionListener interface implementation.

Based on the code you shared, it seems like you’re trying to create a simple calculator using Swing components. The error is occurring because you haven’t implemented the actionPerformed method from the ActionListener interface correctly. In your code, you’re missing the @Override annotation before the actionPerformed method, which is causing the compiler to complain.

To fix this error, add the @Override annotation before the actionPerformed method in your Calculator class. This annotation is used to indicate that a method is intended to override a method in a superclass. Here’s how you can modify your code:

javaCopy code
public class Calculator extends JFrame implements ActionListener {

    // Other code

    @Override
    public void actionPerformed(ActionEvent e) {
        // Your actionPerformed logic here
    }
}

By adding the @Override annotation, you’re telling the compiler that the actionPerformed method is overriding a method from the ActionListener interface, which should resolve the error.

Let me know if you need further assistance with your Java Swing code!

بناءً على الرمز الذي قدمته في الرابط الذي شاركته، يبدو أنك تحاول إنشاء آلة حاسبة بسيطة باستخدام Java Swing. الخطأ الذي تواجهه يحدث بسبب عدم تنفيذ الواجهة ActionListener بشكل صحيح.

لحل هذا الخطأ، يجب عليك تنفيذ الواجهة ActionListener بشكل صحيح وتحديد السلوك الذي ستتبعه عند حدوث حدث الفأرة. يمكنك فعل ذلك عن طريق كتابة الشيفرة التالية:

javaCopy code
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Calculator extends JFrame implements ActionListener {

    private JTextField tf;
    private JButton[] buttons;
    private String[] buttonLabels = {
        "7", "8", "9", "/",
        "4", "5", "6", "*",
        "1", "2", "3", "-",
        "0", ".", "=", "+"
    };

    public Calculator() {
        tf = new JTextField(10);
        tf.setEditable(false);
        tf.setHorizontalAlignment(JTextField.RIGHT);
        add(tf, BorderLayout.NORTH);

        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(4, 4));

        buttons = new JButton[buttonLabels.length];
        for (int i = 0; i < buttonLabels.length; i++) {
            buttons[i] = new JButton(buttonLabels[i]);
            buttons[i].addActionListener(this);
            panel.add(buttons[i]);
        }

        add(panel, BorderLayout.CENTER);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setTitle("Calculator");
        setSize(300, 400);
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        String command = e.getActionCommand();
        if (command.equals("=")) {
            String expression = tf.getText();
            try {
                ScriptEngineManager mgr = new ScriptEngineManager();
                ScriptEngine engine = mgr.getEngineByName("JavaScript");
                Object result = engine.eval(expression);
                tf.setText(result.toString());
            } catch (ScriptException ex) {
                tf.setText("Error");
            }
        } else {
            tf.setText(tf.getText() + command);
        }
    }

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

هذا الكود ينشئ آلة حاسبة بسيطة تستخدم Java Swing. تم تعيين عنصر JTextField لعرض النتائج وعنصر JPanel لتخطيط الأزرار. كما تم تنفيذ واجهة ActionListener بحيث يتم استدعاء actionPerformed عند النقر على الأزرار.