What's wrong with this code.

Question

class Sample extends Thread
{
String s;

Sample(String n)
{
this.n = s;
}

public void run()
{
System.out.println("Hello "+s);
}
}

class Loader
{
public static void main(String args[])
{
Sample ob1 = new Sample("David Beckham");
Sample ob2 = new Sample("Cristiano Ronaldo");
ob1.start();
ob2.start();
}
}

Answer 1

Solved by self. (this.n=s;)