How do you add data to a Swing component such as a JTable JTree or JList?

1. How do you add a JList?
2. How does a JList work?
3. What is JTree?
4. What is JTable in Java?
5. Which elements are supported by JList?
6. Which method do you use to enable and disable components such as buttons?
7. Can components in Java AWT or Java Swing contain other components or containers?
8. What is purpose of JTree Mcq?
9. What constructs a JList that displays the elements in the specified array?
10. Which method in JList allows the user to select multiple ranges of items within the list?

How do you add a JList?

Populate the JList with a DefaultListModel, not a vector, and have the model visible in the class. Then simply call addElement on the list model to add items to it.

How does a JList work?

Constructs a JList that displays the elements in the specified array. This constructor creates a read-only model for the given array, and then delegates to the constructor that takes a ListModel .

What is JTree?

JTree is a Swing component with which we can display hierarchical data. JTree is quite a complex component. A JTree has a 'root node' which is the top-most parent for all nodes in the tree. A node is an item in a tree.

What is JTable in Java?

The JTable is used to display and edit regular two-dimensional tables of cells. See How to Use Tables in The Java Tutorial for task-oriented documentation and examples of using JTable .

Which elements are supported by JList?

JList uses a java. awt. Component , provided by a delegate called the cellRendererer , to paint the visible cells in the list. The cell renderer component is used like a "rubber stamp" to paint each visible row.

Which method do you use to enable and disable components such as buttons?

Enabling and Disabling Components

Standard Swing components can be turned on and off by calling the setEnabled() method. When a component such as a JButton or JTextField is disabled, it becomes “ghosted” or “greyed out” and doesn't respond to user input.

Can components in Java AWT or Java Swing contain other components or containers?

It inherits Component and Container of AWT. It cannot be contained within other containers.

What is purpose of JTree Mcq?

The JTree class is used to display the tree structured data or hierarchical data. JTree is a complex component. It has a 'root node' at the top most which is a parent for all nodes in the tree. It inherits JComponent class.

What constructs a JList that displays the elements in the specified array?

JList(ListModel dataModel)

Constructs a JList that displays elements from the specified, non-null, model.

Which method in JList allows the user to select multiple ranges of items within the list?

Multiple selection list enables the user to select many items from a JList. A SINGLE_INTERVAL_SELECTION list allows selection of a contiguous range of items in the list by clicking the first item, then holding the Shift key while clicking the last item to select in the range.