Source Code : Create a dynamic icon

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Create a dynamic icon

     

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Graphics;

import javax.swing.Icon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;


public class Main{
  Icon icon = new DynamicIcon();
  final JSlider width = new JSlider(JSlider.HORIZONTAL, 1, 150, 75);
  final JSlider height = new JSlider(JSlider.VERTICAL, 1, 150, 75);
  final JLabel dynamicLabel = new JLabel(icon);
  Main(){
    Updater updater = new Updater();
    width.addChangeListener(updater);
    height.addChangeListener(updater);
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
    f.add(width, BorderLayout.NORTH);
    f.add(height, BorderLayout.WEST);
    f.add(dynamicLabel, BorderLayout.CENTER);
    f.setSize(210, 210);
    f.setVisible(true);

  }
  public static void main(String[] args) {
    new Main();
  }
  class Updater implements ChangeListener {
    public void stateChanged(ChangeEvent ev) {
      dynamicLabel.repaint();
    }
  }

  class DynamicIcon implements Icon {
    public int getIconWidth() {
      return width.getValue();
    }

    public int getIconHeight() {
      return height.getValue();
    }

    public void paintIcon(Component c, Graphics g, int x, int y) {
      g.fill3DRect(x, y, getIconWidth(), getIconHeight(), true);
    }
  }
}

   
    
    
    
    
  

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