Java DefaultComboBoxModel .getSize ()
Syntax
DefaultComboBoxModel.getSize() has the following syntax.
public int getSize()
Example
In the following code shows how to use DefaultComboBoxModel.getSize() method.
// w w w. j a va2 s . c o m
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
public class Main {
public static void main(final String args[]) {
final DefaultComboBoxModel<String> model = new DefaultComboBoxModel<String>();
model.addElement("A");
model.addElement("C");
model.addElement("D");
model.addElement("A");
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JComboBox<String> comboBox1 = new JComboBox<String>(model);
comboBox1.setMaximumRowCount(5);
comboBox1.setEditable(true);
frame.add(comboBox1, BorderLayout.NORTH);
JList<String> jlist = new JList<String>(model);
JScrollPane scrollPane = new JScrollPane(jlist);
frame.add(scrollPane, BorderLayout.CENTER);
JButton button = new JButton("Add");
frame.add(button, BorderLayout.SOUTH);
ActionListener actionListener = new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
model.addElement("a");
System.out.println(model.getSize());
}
};
button.addActionListener(actionListener);
frame.setSize(300, 200);
frame.setVisible(true);
}
}
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