Thread: Possibly a noobish issue

Java Class

package Aula_Teo;
 
public class Contacto {
 
    private static class string {
 
        public string() {
        }
    }
 
    private int numero;
    private string nome;
    private int telefone;
    private boolean tipo;
 
private static int numC=0;
 
 
public Contacto(string nomeC, int telefoneC, boolean tipoT){
    this.numero=++numC;
    this.nome=nomeC;
    this.telefone=telefoneC;
    this.tipo=tipoT;
}
 
public int getNumero(){
    return this.numero;
}
 
public string getNome(){
    return this.nome;
}
 
public int getTelefone(){
    return this.telefone;
}
 
public boolean isMovel(){
    return this.tipo;
}
 
public void setNome(string nomeCont){
    this.nome=nomeCont;
}
 
public void setTelefone(int tel){
    this.telefone=tel;
}
public void setTipo(boolean t){
    this.tipo=t;
}
}

Java Main Class

package Aula_Teo;
 
import java.util.Scanner;
 
 
public class Agenda {
 
    static Scanner scan = new Scanner(System.in);
 
    public static void main(String[] args) {
        Contacto[]agenda=new Contacto[50];
 
        int conta=0;
 
        /*
         * agenda[0]=insereContacto();
         * agenda[1]=insereContacto();
         * agenda[2]=insereContacto();
         * agenda[3]=insereContacto();
         * agenda[4]=insereContacto();
        */
 
        for(int i=0;i<5;i++){
            agenda[i]=insereContacto();
            scan.nextLine();
            conta++;
        }
 
        for (int i=0;i<conta;i++)
            imprimeContacto(agenda[i]);
 
        //para inserir a pesquisa
 
        System.out.println("Introduza um número de telefone: ");
        int num=scan.nextInt();
        int pos=pesqTelefone(agenda, conta, num);
        if (pos==-1)
            System.out.println("O número não conta da listagem");
        else
            imprimeContacto(agenda[pos]);
 
    }
 
    private static Contacto insereContacto(){
 
        String nomeCont; int tel; boolean t;
        char op;
 
        System.out.println("Nome: ");
        nomeCont=scan.nextLine();
 
        do{
        System.out.println("Nº telefone: ");
        tel=scan.nextInt();
        }while(tel<100000000||tel>999999999);
 
        do{
            System.out.println("Tipo (movel/fixo): ");
            op=scan.nextLine().charAt(0);
        }while(op!='m'||op!='M'||op!='f'||op!='F');
 
        if (op=='m'||op=='M')
            t=true;
        else
            t=false;
 
        return new Contacto(nomeCont,tel,t);
    }
 
    private static void imprimeContacto(Contacto c){
 
        System.out.println("Numero:"+c.getNumero());
        System.out.println("Nome:"+c.getNome());
        System.out.println("Telefone:"+c.getTelefone());
        if (c.isMovel()==true)
            System.out.println("Movel");
        else
            System.out.println("Fixo");
    }
 
    //alínea ii
 
    private static int eliminaContacto(Contacto[] v,int pos,int nElem){
 
 
        v[pos]=v[nElem-1];
 
        return --nElem;
    }
 
    private static int pesqTelefone(Contacto[]v, int nElem, int numT){
 
        int i=0;
        while(i<nElem && numT!=v[i].getTelefone())
            i++;
        if (i<nElem)
            return i;
        else return -1;
    }
 
    private static int pesqNome(Contacto[]v, int nElem, String nomeP){
 
        int i=0;
        while(i<nElem && !nomeP.equalsIgnoreCase(v[i].getNome()))
            i++;
        return i;
    }
 
}

In the Java Main Class, where: return new Contacto(nomeCont,tel,t); appears I get an error which says:

cannot find symbol
symbol: constructor Contacto(java.lang.String,int,boolean)
location: class Aula_Teo.Contacto

which also causes an error here: while(i<nElem && !nomeP.equalsIgnoreCase(v[i].getNome()))

I think this might be a noobish question, but hey, I'm just starting so...
Thank you for any help you might give me

Your inner class string does nothing.

Does tipo mean type?

conta was never defined as a variable in the main method, at least not before you used it, so it won't know what to do with it.

scan.nextLine();

This scans but doesn't set it to anything.

String str = "";

and then later

str = scan.nextLine(); will at least set it to something

for(int i=0;i<5;i++){
agenda[i]=insereContacto();
scan.nextLine();
conta++;
}

do you mean i < 50?

Otherwise, there will be 50 agenda, but only 5 will have values.

if (pos==-1)

should be replaced by

if (pos >=0 && pos < agenda.length)

else
imprimeContacto(agenda[pos]);

this won't work unless you have all 50 values as my if statement above will let it work and not get a compiler error,

but if they enter like 30, you've got nothing in index 30 so it'll throw a Null Pointer Exception.

Java already has a class called String, with a capital S. You don't need to write your own, unless you have to.

if (c.isMovel()==true)

Actually, boolean method can be written

if (c.isMovel())

if checking to see if true

and

if (!c.isMovel())

if checking to see if false

 

cannot find symbol

symbol: constructor Contacto(java.lang.String,int,boolean)

location: class Aula_Teo.Contacto

I think this means that you had an inner class called string, and maybe you called it.

You forgot to capitalize String.

When it pass it a String,

it expected a type of type "string".

javapenguin is correct.... Delete your inner string class.... and then change the type in the constructor from string to String