import java.applet.*;
import java.awt.*;

class waveFrame extends Frame

{	   		
	private Applet m_appletParent;
	private Label line1,line2,line3,
		line4,line5,line6,line7;

	waveFrame(Applet appletParent)
	{
		super("Wavelength");
		m_appletParent = appletParent;
		setLayout(new GridLayout(7,1,0,0));
		line1 = new Label("The wavelength is the distance  ");
		line2 = new Label("between equivalent points on  ");
		line3 = new Label("the wave. This is illustrated  ");
		line4 = new Label("by the two surfers who move  ");
		line5 = new Label("along always exactly one  ");
		line6 = new Label("wavelength apart, on the same  ");
		line7 = new Label("part of the wave. ");
		add(line1);
		add(line2);
		add(line3);
		add(line4);
		add(line5);
		add(line6);
		add(line7);
	}
	public boolean handleEvent(Event e)
	{
		Object ob; 
		if (e.id == Event.WINDOW_DESTROY)
		{
			ob = "w";
			m_appletParent.action(e,ob);
			return true;
		}
		else
		{
			return super.handleEvent(e);
		}
	}
}

class freqFrame extends Frame

{	   		
	private Applet m_appletParent;
	private Label line1,line2,line3,
		line4,line5,line6,line7,line8;

	freqFrame(Applet appletParent)
	{
		super("Frequency");
		m_appletParent = appletParent;
		setLayout(new GridLayout(8,1,0,0));
		line1 = new Label("The frequency is number of  ");
		line2 = new Label("waves that pass a given point  ");
		line3 = new Label("in unit time. This is shown  ");
		line4 = new Label("by the seated surfer who bobs  ");
		line5 = new Label("up and down as the waves pass.  ");
		line6 = new Label("The frequency in Hertz is the  ");
		line7 = new Label("number of time he does this  ");
		line8 = new Label("in one second. ");
		add(line1);
		add(line2);
		add(line3);
		add(line4);
		add(line5);
		add(line6);
		add(line7);
		add(line8);
	}
	public boolean handleEvent(Event e)
	{
		Object ob;
		if (e.id == Event.WINDOW_DESTROY)
		{
			ob = "f";
			m_appletParent.action(e,ob);
			return true;
		}
		else
		{
			return super.handleEvent(e);
		}
	}

}