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How to display the different font items inside a JComboBox in Java?
A JComboBox is a subclass of JComponent class and it is a combination of a text field and a drop-down list from which the user can choose a value. A JComboBox can generate an ActionListener, ChangeListener, and ItemListener interfaces when the user actions on a combo box. We can display the different font styles inside a JComboBox by implementing the ListCellRenderer interface
Example
import java.awt.*;
import javax.swing.*;
public class JComboBoxFontTest extends JFrame {
private JComboBox fontComboBox;
private String fontName[];
private Integer array[];
public JComboBoxFontTest() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
fontName = ge.getAvailableFontFamilyNames();
array = new Integer[fontName.length];
for(int i=1;i<=fontName.length;i++) {
array[i-1] = i;
}
fontComboBox = new JComboBox(array);
ComboBoxRenderar renderar = new ComboBoxRenderar();
fontComboBox.setRenderer(renderar);
setLayout(new FlowLayout());
add(fontComboBox);
setSize(400, 300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setVisible(true);
}
private class ComboBoxRenderar extends JLabel implements ListCellRenderer {
@Override
public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
int offset = ((Integer)value).intValue() - 1;
String name = fontName[offset];
setText(name);
setFont(new Font(name,Font.PLAIN,20));
return this;
}
}
public static void main(String args[]) {
new JComboBoxFontTest();
}
}Output
Updated on: 10-Feb-2020
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