Draw a sine curve

 

// Draw a sine curve program

Import java. applet .*;
Import java. awt .*;
Import java. awt. event .*;
Public class ko12_3 extends Applet implements ActionListener
{
Int x, y;
Double;
Button bn1 = new Button ("Sin waveform ");
Button bn2 = new Button ("clear ");
Public void init ()
{
Add (bn1 );
Add (bn2 );
Bn1.addActionListener (this );
Bn2.addActionListener (this );
}
Public void actionreceivmed (ActionEvent e)
{
Graphics g = getGraphics ();
If (e. getSource () = bn1)
{
For (x = 0; x <= 360; x + = 9)
{
A = Math. sin (x * Math. PI/180 );
Y = (int) (80 + 40 * );
G. drawString ("*", x, y );
}
}
If (e. getSource () = bn2)
Repaint ();
}
}
// Ko12_3.html
<Applet code = "ko12.3class" width = 280 height = 160>
</APPLET>