Constructor not being called

[maskL]

I was asked to explain why the line

System.out.println("" + x[2].getN());

wont work. I figure the constructor is not being triggered but the why, beats me. Anyone care to explain?

class Num{ 
    private int n; 
    public int getN(){ return n;} 
    public Num( ){ n = 4; } 
} 
public class Main { 
  public static void main( String[] args){ 
    Num [] x = new Num[7]; 
    System.out.println("" + x.length);  
    System.out.println("" + x[2].getN());               
  } 
}