JList.setVisibleRowCount(int visibleRowCount) has the following syntax.
public void setVisibleRowCount(int visibleRowCount)
In the following code shows how to use JList.setVisibleRowCount(int visibleRowCount) method.
import java.awt.BorderLayout; /* w w w . java2 s.c om*/ import javax.swing.JFrame; import javax.swing.JList; import javax.swing.JScrollPane; public class Main { public static void main(final String args[]) { String labels[] = { "A", "B", "C", "D", "E" }; JFrame frame = new JFrame("Sizing Samples"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JList jlist1 = new JList(labels); jlist1.setVisibleRowCount(4); JScrollPane scrollPane1 = new JScrollPane(jlist1); frame.add(scrollPane1, BorderLayout.NORTH); frame.setSize(300, 350); frame.setVisible(true); } }