Figuras 1

Figuras 1
public abstract class Figura {
protected String nombre;
public abstract double getPerimetro();
public abstract double getArea();
public String getNombre(){return nombre;}
}
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public class Circulo extends Figura {
public static final double pi=3.1416;
double radio;
public Circulo(double r) {radio=r;}
public double getPerimetro() {
// TODO Auto-generated method stub
return pi*2*radio;
}
@Override
public double getArea() {
// TODO Auto-generated method stub
return pi*radio*radio;
}
}
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public class PoligonoRegular extends Figura {
private int numlado;
private double radio;
public static final double pi=3.1416;
public PoligonoRegular(int nl, double rr)
{
numlado=nl;
radio=rr;
}
@Override
public double getPerimetro() {
return numlado*2*radio*Math.sin(pi/numlado);
}
@Override
public double getArea() {
return getPerimetro()*0.5*Math.cos(pi/numlado);
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Figuras 1
}
}
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import java.util.LinkedList;
public class Catalogo {
LinkedList lis;
public Catalogo(){lis = new LinkedList();}
public void agregaPR(int n, double r)
{
lis.add(new PoligonoRegular(n,r));
}
public Figura busca(int n) {return (Figura)lis.get(n);}
public void agregaCirc(double r)
{
lis.add(new Circulo(r));
}
public double dimePerimetro(int n)
{
Figura f=busca(n);
if (f==null) return -1.0;
else return f.getPerimetro();
}
public double dimeArea(int n)
{
Figura f=busca(n);
if (f==null) return -1.0;
else return f.getArea();
}
}
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import junit.framework.TestCase;
public class CatalogoTest extends TestCase {
private Catalogo kat;
protected void setUp() throws Exception {
super.setUp();
kat=new Catalogo();
}
public void testagrega1()
{
kat.agregaCirc(10.0);
System.out.println("Círculo con radio 10.0 tiene area= "+kat.dimeArea(0));
assertEquals(314.16,kat.dimeArea(0),0.01);
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}
public void testagrega2()
{
kat.agregaPR(4,10.0);
System.out.println("Cuadrado con radio 10.0 tiene area= "+kat.dimeArea(0));
assertEquals(20.0,kat.dimeArea(0),0.01);
}
}
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import java.io.*;
import java.util.StringTokenizer;
public class IUTexto {
String deli=",;:-+ ";
BufferedReader ent;
String lin, tok;
StringTokenizer st;
boolean sigue;
private Catalogo cata;
public IUTexto(){cata=new Catalogo();}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
IUTexto inter=new IUTexto();
inter.accion();
}
public boolean accion()
{
boolean regreso=true;
System.out.println("*** Comienza prueba de figuras ***");
System.out.println("Comandos:");
System.out.println("agrega poligono <nl> <radio>");
System.out.println("agrega circulo <radio>");
System.out.println("perimetro <cual>");
System.out.println("area <cual>");
System.out.println("fin");
//abrimos archivo de lectura
sigue=true;
try{
ent=new BufferedReader(new InputStreamReader(System.in));
while((lin=ent.readLine())!=null &&sigue)
{
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Figuras 1
st=new StringTokenizer(lin,deli,false);
while (st.hasMoreTokens())
{
tok=st.nextToken();
if (tok.equals("fin"))sigue=false;
else
if (tok.equals("area"))
{
tok=st.nextToken();
int n=Integer.parseInt(tok);
double ar=cata.dimeArea(n);
System.out.println("Area de figura "+n+" = "+ar);
}
else
if (tok.equals("perimetro"))
{
int n=Integer.parseInt(st.nextToken());
System.out.println("Perimetro de figura
"+n+" = "+cata.dimePerimetro(n));
}
else
if (tok.equals("circulo"))
{
tok=st.nextToken();
double d=Double.parseDouble(tok);
cata.agregaCirc(d);
System.out.println("Agregamos
círculo de radio "+d);
}
else
if (tok.equals("poligono"))
{
int
n=Integer.parseInt(st.nextToken());
double
d=Double.parseDouble(st.nextToken());
cata.agregaPR(n, d);
System.out.println("Agregamos polígono de "+n+" lados y radio "+d);
}
else
System.out.println("Error en
comando. Repita");
}
}
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Figuras 1
System.out.println("*** Terminamos. Adiós. ***");
}catch (Exception e){System.out.println("Problema en lectura: "+e);return false;}
return regreso;
}
}
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import junit.framework.TestCase;
public class IUTextoTest extends TestCase {
private IUTexto textin;
protected void setUp() throws Exception {
super.setUp();
textin=new IUTexto();
}
/*
* Test method for 'IUTexto.accion()'
*/
public void testAccion() {
assertEquals(true,textin.accion());
}
}
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