help with Vector class for searching and object manipulation

Error 1:

/Factura.java:33: cannot find symbol

symbol : variable True

location: class Factura

ventana.setVisible(True);

^

Solution:

use the lowercase "true"

ventana.setVisible(true);

Error 2:

Libritos.java:30: cannot find symbol

symbol : method getLength()

location: class Libro[]

for (int i=0; i><arreglolibros.getLength();i++)

^

Soluion:

1) What is the i>< ?

2) Check whether the getLength() exists in class Libro. If not use

for (int i=0; i<arreglolibros.getLength();i++)

Error 3:

Libritos.java:28: incompatible types

found : java.lang.Object[]

required: Libro[]

Libro arreglolibros[]=libros.toArray();

Solution:

the toArray() is returning an Object. You are trying to assign directly to Libro. Any class is a subclass of Object class. Base class object cant be assigned to a subclass. Try to find a workaround.>

FebTena at 2007-7-15 0:45:13 >

Ok getting better

import java.awt.event.*;

import javax.swing.*;

import java.util.*;

class Libritos

{

private static Vector<Empleado> empleados = new Vector<Empleado>();

private static Vector<Libro> libros = new Vector<Libro>();

private static Vector<Cliente> clientes = new Vector<Cliente>();

private static Vector<Factura> facturas = new Vector<Factura>();

public static void main(String[] args)

{

Gui Ventana = new Gui();

}

public static Vector buscarLibro(String value)

{

Vector lista = new Vector();

int temp;

Libro arreglolibros[]=libros.toArray();

for (int i=0; i < arreglolibros.getLength(); i++)

{

if(arreglolibros[i].getTitulo().matches(value))

{

lista.add(libros.elementAt(i));

}

}

return lista;

}

// begin setget

public static void nuevoEmpleado()

{

empleados.add(new Empleado());

}

public static void nuevoLibro()

{

libros.add(new Libro());

}

public static void nuevoCliente()

{

clientes.add(new Cliente());

}

public static Empleado getEmpleado(int value)

{

Empleado temp = empleados.get(value);

return temp;

}

public static Cliente getCliente(int value)

{

return clientes.elementAt(value);

}

public static Factura getFactura(int value)

{

return facturas.elementAt(value);

}

public static Libro getLibro(int value)

{

return libros.elementAt(value);

}

}

Libritos.java:28: incompatible types

found: java.lang.Object[]

required: Libro[]

Libro arreglolibros[]=libros.toArray();

^

Libritos.java:30: cannot find symbol

symbol : method getLength()

location: class Libro[]

for (int i=0; i < arreglolibros.getLength(); i++)

^

Note: ./Gui.java uses or overrides a deprecated API.

Note: Recompile with -Xlint:deprecation for details.

Note: Some input files use unchecked or unsafe operations.

Note: Recompile with -Xlint:unchecked for details.

2 errors

the second is because of the first?

--D_S--a at 2007-7-15 0:45:13 >

Now that the vector return is solved is it better this?

public static Vector buscarLibro(String value)

{

Vector lista = new Vector();

int temp;

// Libro arreglolibros[]=libros.toArray();

for (int i=0; i < libros.indexOf(libros.lastElement()); i++)

{

if(libros.get(i).getTitulo().matches(value))

{

lista.add(libros.elementAt(i));

}

}

return lista;

}

--D_S--a at 2007-7-15 0:45:13 >