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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.

Correct Answer:

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