CODEWITHSUNDEEP
javaobjectregistration
susan
susan

Reputation: 41

passing an Object to a method?

public void actionPerformed(ActionEvent actionEvent) { }

What does this line mean in detail, apart from that ActionEvent 's reference is being passed to actionPerformed method.

Upvotes: 0

Views: 322

Answers (2)

StKiller
StKiller

Reputation: 7951

This method is part of ActionListener interface.

public class Listener implements ActionListener{

public static void main(String[] args) {
    Listener listener = new Listener();
    Button button = new Button();
    button.addActionListener(listener);
}

public void actionPerformed(ActionEvent e) {
    throw new UnsupportedOperationException("Not supported yet.");
}

}

When the user will press the button, the method actionPerformed of Listener class will be invoked.

Upvotes: 4

user541686
user541686

Reputation: 210623

public void actionPerformed(ActionEvent actionEvent) { }
  • public: Method is accessible from any code.
  • void: Method doesn't return anything.
  • actionPerformed: Name of method.
  • (: You're beginning to specify the parameter list.
  • ActionEvent: Type of parameter #1.
  • actionEvent: Name of parameter #1.
  • ): You've finished specifying the parameter list.
  • { }: Method doesn't do anything.

Upvotes: 8

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