Tag Cloud - A Java application

Tag Cloud – Java Application

                A tag cloud (word cloud or weighted list in visual design) is a visual representation for text data, typically used to depict keyword metadata (tags) on websites, or to visualize free form text. Tags are usually single words, and the importance of each tag is shown with font size or color. This format is useful for quickly perceiving the most prominent terms and for locating a term alphabetically to determine its relative prominence.

A sample java code to generate tag clod using JFrame, Jpanel and labels is given below.

/**

 *

 * @author Amal_Babu

 *

 */

package examples;

import java.util.Random;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.SwingUtilities;

import org.mcavallo.opencloud.Cloud;

import org.mcavallo.opencloud.Tag;

public class TagCloudExample {

       private static final String[] TAG_TERMS = { "amal", "amal", "alackal", "amal",

                     "arun", "basil", "praveen", "basil", "meera", "alackal", "basil",

                     "praveen", "basil", "praveen", "amal", "amal", "amal","ahalya","archana","reeshil"};

       protected void initializeMethod() {

              JFrame cloudFrame = new JFrame(TagCloudExample.class.getSimpleName());

              cloudFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

              JPanel cloudPanel = new JPanel();

              Cloud cloud = new Cloud();

              Random random = new Random();

              for (String tagWord : TAG_TERMS) {

                     for (int i = random.nextInt(50); i > 0; i--) {

                           cloud.addTag(tagWord);

                     }

              }

              for (Tag tag : cloud.tags()) {

                     final JLabel label = new JLabel(tag.getName());

                     label.setFont(label.getFont().deriveFont(

                                  (float) tag.getWeight() * 10));

                     cloudPanel.add(label);

              }

              cloudFrame.add(cloudPanel);

              cloudFrame.setSize(300, 300);

              cloudFrame.setVisible(true);

       }

       public static void main(String[] args) {

              SwingUtilities.invokeLater(new Runnable() {

                     @Override

                     public void run() {

                           new TagCloudExample().initializeMethod();

                     }

              });

       }

}

Output