How do I check if a JList is selected?
To check if there are any selected items, use the following: boolean res = ! list. isSelectionEmpty();
Which method is used to set the selection mode for the JList?
Method Summary
| Modifier and Type | Method and Description |
|---|---|
| void | setSelectionInterval(int anchor, int lead) Selects the specified interval. |
| void | setSelectionMode(int selectionMode) Sets the selection mode for the list. |
How do you use JList?
JList is a component that displays a set of Objects and allows the user to select one or more items . JList inherits JComponent class. JList is a easy way to display an array of Vectors ….Java Swing | JList with examples.
| method | explanation |
|---|---|
| setSelectedIndices(int[] i) | changes the selection to be the set of indices specified by the given array. |
How get values from JList?
Get selected value from JList
- Create a class that extends JFrame and implements ActionListener interface.
- Create an array of objects.
- Create a new JList with the above array.
- Create a new JButton .
- Call getSelectedIndex to get the index of the selected item in the JList .
Which method in JList allows the user to select multiple ranges of items within the list?
A multiple-selection list enables the user to select many items from a JList (see output of Example 11.26). A SINGLE_INTERVAL_SELECTION list allows selecting a contiguous range of items. To do so, click the first item, then press and hold the Shift key while clicking the last item in the range.
Which method of a JList returns if no item in the list is selected?
getSelectedIndex() method
to determine which item is selected, use the getSelectedIndex() method of the JList. This returns the index of the item selected by the user, or -1 if no item is selected.
How do I add an item to a JList?
7 Answers. 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 add data to JList?