Which of the following statements is false?
a. You must create an object of class JOptionPane to use its static method showMessageDialog.
b. JOptionPane method showInputDialog displays an input dialog containing a prompt and a field (known as a text field) in which a user can enter text.
c. String method format works like method System.out.printf, except that format returns the formatted String rather than displaying it in a command window.
d. An input dialog allows the user to enter data into a program.
a. You must create an object of class JOptionPane to use its static method showMessageDialog.
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