whats wrong with this code

[ali pak]

// why i am getting NullPointerException
class a
{
public static void main(String[] args)
{
b[] x = new b[5];
x[0].xx = "ali";
System.out.println(x[0].xx);
}
}
class b
{
String xx;
}

[Murtuza Thaver]

My guess is u havent initialized the strings in the array correctly.This link might be helpful
http://developer.irt.org/script/4018.htm

[Marilyn de Queiroz]

<font size=2>class a
{
  public static void main(String[] args)
  {
    b[] x = new b[5]; 
    x[0].xx =  "ali";
    System.out.println(x[0].xx);     
  }
}
class b
{
  String xx; 
}

// why i am getting NullPointerException

x[0] is null, so you have null.xx which doesn't work.