java - 将ActionListener 添加到JMenuItem 时出错

Question

required: ActionListener
found: EditMenuFunctions
reason: actual argument EditMenuFunctions cannot be converted to ActionListener by method invocation conversion

.\AFrame.java:56: error: method addActionListener in class AbstractButton cannot be applied to given types;

refMenuBar.time_date.addActionListener(new EditMenuFunctions());

AMenuBar refMenuBar = new AMenuBar();
protected final JMenuItem time_date = new JMenuItem("Time / Date");
refMenuBar.time_date.addActionListener(new EditMenuFunctions());

class EditMenuFunctions 是我的类，其中包含 actionPerformed() 方法。我将 actionListener 添加到 class AFrame 中的 JMenuItem，并在 class AMenuBar

中创建了 JMenuItem

Answer 1

您的EditMenuFunctions必须实现ActionListener。例如:

public class EditMenuFunctions implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent event) { ... }

}