Ej. Dinamica

import java.applet.Applet;
import java.awt.*;
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JApplet;
import javax.swing.JOptionPane;


public class Fisica extends Applet{
public void paint(Graphics g){


String aux=JOptionPane.showInputDialog(null, "Ingrese el valor Hipotenusa","titulo", JOptionPane.DEFAULT_OPTION);
int temp=Integer.parseInt(aux);
g.drawLine(50, 180,180, 50);

String aux1=JOptionPane.showInputDialog(null, "Ingrese el valor de X","titulo", JOptionPane.DEFAULT_OPTION);
int tem=Integer.parseInt(aux1);
g.drawLine(50, 180, 180,180);

String aux2=JOptionPane.showInputDialog(null, "Ingrese el valor de la Altura","titulo", JOptionPane.DEFAULT_OPTION);
int temp1=Integer.parseInt(aux2);
g.drawLine(180, 50, 180, 180);

}
}