Java DefaultListModel .ensureCapacity (int minCapacity)
Syntax
DefaultListModel.ensureCapacity(int minCapacity) has the following syntax.
public void ensureCapacity(int minCapacity)
Example
In the following code shows how to use DefaultListModel.ensureCapacity(int minCapacity) method.
// w ww . j a va 2 s .c o m
import java.awt.BorderLayout;
import java.util.Enumeration;
import javax.swing.DefaultListModel;
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();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
DefaultListModel model = new DefaultListModel();
model.ensureCapacity(1000);
for (int i = 0; i < 100; i++) {
for (int j = 0; j < 5; j++) {
model.addElement(labels[j]);
}
}
model.ensureCapacity(100);
JList jlist2 = new JList(model);
jlist2.setVisibleRowCount(4);
jlist2.setFixedCellHeight(12);
jlist2.setFixedCellWidth(200);
JScrollPane scrollPane2 = new JScrollPane(jlist2);
frame.add(scrollPane2, BorderLayout.CENTER);
frame.setSize(300, 350);
frame.setVisible(true);
}
}
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