import javax.swing.*; 

class Three extends JFrame {
  Three(String title, int width, int height) {
    JButton button = new JButton("Click me!"); 
    JLabel label = new JLabel("Hello, World!"); 

    JPanel panel = new JPanel();  

    panel.add(button); 
    panel.add(label); 

    this.add(panel); 

    this.setSize(width, height); 
    this.setTitle(title); 
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    this.setVisible(true); 
  }
  public static void main(String[] args) {
    Three f = new Three("Simple Frame", 300, 100); 
  }
}