1. A message dialog displaying Oranges will appear 2. The message dialog displays the original value of a, which is 3. The a that is set to 0 inside the method is a local variable. 3. Here are the...

1. A message dialog displaying Oranges will appear

2. The message dialog displays the original value of a, which is 3. The a that is set to 0 inside the method is a local variable.

3. Here are the stages in replacing a call by its result. For:

n = areaRectangle(10, 20);

we have:

n = 200;

For the line:

JOptionPane.ShowMessageDialog(null, "area is " +

areaRectangle(3, 4));

we have the stages:

JOptionPane.ShowMessageDialog(null, "area is " + 12);

JOptionPane.ShowMessageDialog(null, "area is 12");

For the line:

n = areaRectangle(10, 20) * areaRectangle(7, 8);

we have the stages:

n = 200 * 56;

n = 11200;