Which variable in the GridBagConstraints class can use the constant named CENTER? : Questions « Utility Classes « SCJP
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8.34.23.Which variable in the GridBagConstraints class can use the constant named CENTER?
A. gridx
B. fill
C. insets
D. anchor
E. weightx
8.34.Questions
8.34.1.
A Hashtable requires String objects as keys(True/False).
8.34.2.
Answer: hash table key
8.34.3.
A Hashtable maintains object references in the order they were added(True/False).
8.34.4.
Answer: hash table value reference
8.34.5.
Both Vector and Hashtable use synchronized methods to avoid concurrent problems(True/False).
8.34.6.
Answer: synchronization Vector and Hashtable
8.34.7.
Which of the following are interfaces? [Check all correct answers]
8.34.8.
Answer: collection interface and class
8.34.9.
Which class is most similar to the Vector class?
8.34.10.
Answer: Vector like collections
8.34.11.
Which interface does Hashtable implement?
8.34.12.
Answer: interface for Hashtable
8.34.13.
Which of the following layout managers can be used to display nine Button objects at one time?
8.34.14.
Answer: layout
8.34.15.
Which of the following are valid alignment parameters for a FlowLayout?
8.34.16.
Answer: flow layout
8.34.17.
Which of the following layout managers does not alter the height of a component?
8.34.18.
Answer: layout and component height
8.34.19.
For JPanel(new GridLayout(4,4,5,8)), the horizontal space between the buttons will be five pixels(True/False).
8.34.20.
Answer: GridLayout
8.34.21.
For GridLayout, the order in which the Button objects are added controls their position, filling a row first, from left to right (True/False).
8.34.22.
Answer: GridLayout(3)
8.34.23.
Which variable in the GridBagConstraints class can use the constant named CENTER?
8.34.24.
Answer: GridBagConstraints
8.34.25.
Which layout manager ensure that at least a portion of each button added is displayed even when the Panel has been resized to a small size?
8.34.26.
Answer: layout manager
8.34.27.
Which constant names are valid positioning options in the GridBagConstraints class?
8.34.28.
Answer: using GridBagConstraints
8.34.29.
Which of the following classes produce immutable objects?
8.34.30.
Answer: immutable objects
8.34.31.
What is the result(autoboxing and parameter passing)?
8.34.32.
Answer: autoboxing and parameter passing
8.34.33.
What happens when you compile and run code containing the following lines?
8.34.34.
Answer: autoboxing and calculation
8.34.35.
What is the output(substring and file extension name)?
8.34.36.
Answer: substring and file extension name
8.34.37.
What is the result(String reference)?
8.34.38.
Answer: String reference
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