Java constructor not initializing properly

Question

I have a class that has this 2 constructors:

public Conferencia(String nomeConferencia, String localizacaoConferencia, int anoConferencia, int mesConferencia, int diaConferencia) { this.nomeConferencia = nomeConferencia; this.localizacaoConferencia = localizacaoConferencia; this.anoConferencia = anoConferencia; this.mesConferencia = mesConferencia; this.diaConferencia = diaConferencia; this.membroComiteOrganizacao = new MembroComiteOrganizacao[100]; this.membroComitePrograma = new MembroComitePrograma[100]; this.idConferencia = contadorConferencias++; } public Conferencia(String nomeConferencia, String localizacaoConferencia, int anoConferencia, int mesConferencia, int diaConferencia, MembroComiteOrganizacao[] membroComiteOrganizacao) { this.nomeConferencia = nomeConferencia; this.localizacaoConferencia = localizacaoConferencia; this.anoConferencia = anoConferencia; this.mesConferencia = mesConferencia; this.diaConferencia = diaConferencia; this.membroComiteOrganizacao = membroComiteOrganizacao; this.idConferencia = contadorConferencias++; }

MembroComiteOrganizacao constructor is like this:

public MembroComiteOrganizacao(int papelMembro, String memberName, String memberEmail, String memberInstituicao) { super(memberName, memberEmail, memberInstituicao); this.papelMembro = papelMembro; }

In main, to not have to insert always data if i create something like this:

static Conferencia[] conferencias = {new Conferencia("Congresso 1","Abrantes",2012,1,2)};

All is ok.

But now I want to insert in that same constructor data regarding MembroComiteOrganização. I've done:

static Conferencia[] conferencias = {new Conferencia("Congresso 1","Abrantes",2012,1,2,new MembroComiteOrganizacao(1,"Regina Kareem Obrien","[email protected]","Casa da Criança de Tires"))};

but it gives me error.

Can someone explain-me what I'm doing wrong?

UPDATE

done

static Conferencia[] conferencias = {new Conferencia("Congresso 1","Abrantes",2012,1,2,new MembroComiteOrganizacao[1](1,"Regina Kareem Obrien","[email protected]","Casa da Criança de Tires"))};

and the error now is ')' expected

Martin Matula · Accepted Answer · 2011-12-02 11:20:54Z

2

If that is really the only constructor you have in your Conferencia class, then even your first code snipped would fail, since the MembroComiteOrganizacao parameter is not optional and you are not passing value to it.

The other one fails because that parameter is an array, and you are passing a single object.

If you define the last parameter as MembroComiteOrganizacao... membroComiteOrganizacao instead of MembroComiteOrganizacao[] membroComiteOrganizacao (i.e. you use ... instead of []), both your code snippets should work.

answered Dec 2, 2011 at 11:20

Martin Matula

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3 Comments

Favolas Over a year ago

done static Conferencia[] conferencias = {new Conferencia("Congresso 1","Abrantes",2012,1,2,new MembroComiteOrganizacao[1](1,"Regina Kareem Obrien","[email protected]","Casa da Criança de Tires"))}; and now the error is ')' expected

Martin Matula Over a year ago

If you don't want to change your constructor to use ... instead of [], then you have to pass the following as the last parameter:

new MembroComiteOrganizacao[]{new MembroComiteOrganizacao(1,"Regina Kareem Obrien","[email protected]","Casa da Criança de Tires")}

Martin Matula Over a year ago

Btw, if you do replace [] with ... in your constructor, then you can remove the first one (that does not take the last parameter) as the ... tells Java the parameter is optional - so Java treats it as an array which can have 0 to many elements (depending on how many MembroComiteOrganizacao instances you pass to it). So that may be the thing you want to do.

Azodious · Accepted Answer · 2011-12-02 11:17:18Z

1

while creating static Conferencia[] conferencias at index 0, the c'tor is not closed.

answered Dec 2, 2011 at 11:17

Azodious

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Comments

Roger Lindsjö · Accepted Answer · 2011-12-02 11:19:48Z

Your types don't match up, your Conferencia constructor takes an array of MembroComiteOrganizacao, but you give it one instance, not an array.

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