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How can I check if there are any selected items in Java JList
To check if there are any selected items, use the following:
boolean res = !list.isSelectionEmpty();
The value of res would be TRUE IF we have a selected item in the JList.
The following is an example to check if there are any selected items in JList:
Example
package my; import java.awt.event.*; import java.awt.*; import javax.swing.*; class SwingDemo extends JFrame { static JFrame frame; static JList list; public static void main(String[] args) { frame = new JFrame("JList Demo"); SwingDemo s = new SwingDemo(); JPanel panel = new JPanel(); String sports[]= {"Squash","Fencing","Cricket","Football","Hockey","Rugby"}; list = new JList(sports); list.setSelectedIndex(4); boolean res = !list.isSelectionEmpty(); System.out.println(res); panel.add(list); frame.add(panel); frame.setSize(550,300); frame.setVisible(true); } }
Output
The output in the console would be TRUE since we have found a selected item in the JList.
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