In Listing 5.25, what is the effect of replacing the identifier contentPane in the init method with inside? In Listing 5.25, what is the effect—other than stylistic—of replacing the line...

In Listing 5.25, what is the effect of replacing the identifier contentPane

in the init method with inside?

In Listing 5.25, what is the effect—other than stylistic—of replacing the

line

contentPane.add(label1);

in the method with

getContentPane().add(label1);