java - Showing elements of an array of multiple types -

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• what's simplest way print java array? 23 answers

i need create array following structure:

{int, string, string, int} 

i want insert array array this:

{int, string, string, int}, {int, string, string, int}, ... , on. 

i have tried this:

object[] vector = new object[100];  public void inserare(int poz, int nr, string nume, string prenume, int nota){      object[] aux = new object[4];     aux[0] = new integer(nr);     aux[1] = new string(nume);     aux[2] = new string(prenume);     aux[3] = new integer(nota);      vector[poz] = aux;  }  public void afisarelista(){      for(int = 0; < vector.length; i++){         system.out.println(vector[i]);     } } 

aux inserted, when want print elements of main array, this:

[ljava.lang.object;@15db9742 

any display correctly elements appreciated.

passing object system.out.println() results invocation of tostring() method on passed instance. object , object's tostring() returns address of object , not string containing field names values.

to address problem :

either create , use custom class contain these 4 fields , populate array instances of class.
override tostring() in class return expected string.

or else don't rely on tostring() create utility method return "printable" string of object , invoke in argument of println() method :

system.out.println(rendermessage(vector[i])); ... public string rendermessage(object[] obj){     return "nr=" + obj[0]+      "nume=" + obj[1]+     "prenume=" + obj[2]+     "nota=" + obj[3]; }