Final answer:
The gui object in the window calls the actionPerformed() method. In Java programming, the actionPerformed() method is called by a GUI object in the window that the user interacts with, such as a button or other interactive component. The correct answer is D.
Step-by-step explanation:
The gui object in the window calls the actionPerformed() method of a program. When an event occurs, such as a button click, the gui object sends a message to the program's actionPerformed() method to execute the necessary code.
In Java programming, the actionPerformed() method is called by a GUI object in the window that the user interacts with, such as a button or other interactive component.
In the context of Java programming, the actionPerformed() method is usually called by an object known as an event source. The event source can be a GUI object like a button, menu item, or a timer that the user interacts with. When the user generates an action event by interacting with the GUI object, the underlying event handling system of Java's Abstract Window Toolkit (AWT) or Swing framework automatically calls the actionPerformed() method. This method is part of the ActionListener interface, which must be implemented by any class that wants to handle action events triggered by GUI components.
So, the correct answer to the question 'Who calls my program's actionPerformed() method?' is d. a GUI object in the window. When a user clicks on a component such as a button, the button generates an ActionEvent. This event is then passed to the actionPerformed() method of the listener registered with that component.