What is the purpose of the argument "null" in the statement below: JOptionPane.showMessageDialog(null, "Show my message");
A) This argument is ignored by Java.
B) The output message will be placed in the upper left corner of the screen.
C) The output message will be placed in the middle of the screen.
D) It instructs Java to display the message immediately.

Question

Quizplus · Accepted Answer

The "null" argument in the `JOptionPane.showMessageDialog` method call specifies that the message dialog has no parent component, which causes the dialog to be centered on the screen when displayed.

What Is the Purpose of the Argument "Null" in the Statement