When you write an action listener class for a JButton component, it must:
A) have a method named buttonClicked
B) implement the ActionLIstener interface
C) have a method named actionPerformed which must take an argument of the ActionEvent type
D) both B and C
D) both B and C
You might also like to view...
When creating a(n) ________ form using the Form Tool, a main form and a subform are created
Fill in the blank(s) with correct word
Which of the data type below could be used to store elements in their natural order based on the compareTo method.
a. HashSet. b. TreeSet c. ArrayList. d. LinkedList. e. None of the above
____________________ links are easily identified because they are often underlined and appear in a different color.
Fill in the blank(s) with the appropriate word(s).
To check whether a char variable ch is an uppercase letter, you write ___________.
a. (ch >= 'A' && ch >= 'Z') b. (ch >= 'A' && ch <= 'Z') c. (ch >= 'A' || ch <= 'Z') d. ('A' <= ch <= 'Z')