(TCOs 1, 4, and 6) A JList can be populated from (TCOs 1, 4, and 6) Which statem
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(TCOs 1, 4, and 6) A JList can be populated from
(TCOs 1, 4, and 6) Which statement adds the JList component myList to the JFrame using a scroll pane?
(TCOs 1, 4, and 6) Class _____ represents a dynamically resizable array-like data structure.
(TCOs 1, 4, and 6) Which method will remove all elements in an ArrayList employees?
(TCOs 1, 4, and 6) When an item in a JList is selected by the user, a _____ occurs.
(TCOs 1, 4, and 6) Which component allows users to access a layer of GUI components via a tab?
(TCOs 1, 4, and 6) A tool tip can be specified for a tab using the _____ method.
(TCOs 1, 4, and 6) Suppose ArrayList cities contain the two strings {“Chicago”, “Miami”}. Which of the following methods will cause the list to become {“Chicago”, “Houston”,“Miami”}?
(TCOs 1, 4, and 6) Which of the following is false regarding overriding of the toString method?
(TCOs 1, 4, and 6) If your GUI has multiple tabs and you want to know the index of the tab currently selected, use the method
an array.Explanation / Answer
........An array
A jList is populated from an array or vector.
......add(new JScrollPane(myList));
......itemSelectionEvent
......ArrayList
It permits the null elements.It also permits to employ the predefined methods to implement without any complications.
......Employees.clear()
To remove a particular element remove method is used which permits to remove element depends on index , otherwise clear is used
.....jTabbedpane
It also the aligns the GUI components to layres in a way which just single layer is seen simultaneously.
.....cities.add(0, “Houston”)
......toString method must have parameters.
As per the scenario the ToString( ) is with no parameters and return type is string.
....getselectedindex
A property which yeilds the index of tab selected in a dropdownlist.
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