Setting the Dimensions of an Item in a JList Component
import javax.swing.JList; public class Main { public static void main(String[] argv) throws Exception { String[] items = { "A", "B", "C", "D" }; JList list = new JList(items); // Set the item width int cellWidth = 200; list.setFixedCellWidth(cellWidth); // Set the item height int cellHeight = 18; list.setFixedCellHeight(cellHeight); } }