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

question 54

Multiple Choice

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.

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Definitions:

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