Which of the following events can a JComboBox instance generate? A. Component Ev

Question

Which of the following events can a JComboBox instance generate?

A. Component Event

B. MouseEvent

C. ActionEvent

D.ItemEvent

E. C AND D

What method do you use to disable editing on an instance jtf of JTextField?

a. jtf.setEditing(false)

b. jtf.setEnabled(false)

c. jtf.enableEditing(false)

d. jtf.setEdit (false)

Which of the following statemnts is NOT true?

A. A panel can be replaced inside a panel.

B. A frame can be placed inside a frame.

C. A listener object can be registered by many source objects.

d. A source object can register many listeners.

Which of the following draws an arc that is located in the first quarter from startAngle 0 to endAngle 90 degree and is bounded by the rectangle defined by point )7,7) and width 60 and height 30?

A. g.drawArc(350,350,60,30,0,0)

B. g.drawArc(7,7,60,30,90,0)

C. g.drawArc(350,350,60,30,0,90)

D. g.drawArc(7,7,60,30,0,90)

Explanation / Answer

Which of the following events can a JComboBox instance generate?
Answer:

E. C AND D

What method do you use to disable editing on an instance jtf of JTextField?
Answer:
b. jtf.setEnabled(false)

Which of the following statemnts is NOT true?
Answer:
B. A frame can be placed inside a frame.

Which of the following draws an arc that is located in the first quarter from startAngle 0 to endAngle 90 degree and is bounded by the rectangle defined by point )7,7) and width 60 and height 30?
Answer:
B. g.drawArc(7,7,60,30,90,0)

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