How do the lifetimes of the three objects menuLabel, mi, and the anonymous object new MyMenuListener()compare? public JMenuItem makeMenuItem(final String menuLabel)
{
JMenuItem mi = new JMenuItem(menuLabel);
Class MyMenuListener implements ActionListener
{
Public void actionPerformed(ActionEvent
A) all have the same lifetimes
B) menuLabel and new MyMenuListener()are the same and both longer than mi
C) mi and new MyMenuListener()are the same and both longer than menuLabel
D) from shortest to longest: menuLabel, new MyMenuListener(), mi
E) {
DoSomethingElse();
System.out.println(menuLabel);
}
}
Mi)addActionListener(new MyMenuListener());
Return mi;
}

Question

Quizplus · Accepted Answer

menuLabel and new MyMenuListener() are both local variables, so their lifetimes are limited to the scope of the makeMenuItem() method. mi is a field of the makeMenuItem() method, so its lifetime is longer than menuLabel and new MyMenuListener().

How Do the Lifetimes of the Three Objects MenuLabel, Mi