Consider the following code snippet:
Public static void main(String[] args)
{
Order myOrder = new Order();
JButton button = new JButton("Calculate");
JLabel label = new JLabel("Total amount due");
) . .
Class MyListener implements ActionListener
{
Public void actionPerformed(ActionEvent event)
{
Label.setText("Total amount due " + myOrder.getAmountDue());
}
}
}
What is wrong with this code?
A) label must be declared as final.
B) myOrder must be declared as final.
C) label and myOrder must be declared as final.
D) label and button must be declared as final.

Question

Quizplus · Accepted Answer

In order to use the variables label and myOrder inside the actionPerformed method of MyListener, they must be declared as final. This is because the ActionListener is an inner class, and its scope is limited to the main method. The final keyword allows the variables to be accessed from within the inner class without any risk of their values being changed by the main method or other parts of the code.

Consider the Following Code Snippet