Why closures?

If i get things right the closures project aims to pack multiple statements into one logical program unit. For instance the following line would be a logical programming unit:

{
 int x = 3;
 int y = 4;
 int s => x + y;
}

So in this case you have two ints that you add together and this code works as one logic programming unit. I dont see between this code and this code:

int x = 4;
int y = 3;
int sum = x+y;
System.out.println("x + y " + sum);

And - if someone wants to use a more procedureal way - he can put this into a method as follows:

public int add(int x, int y){
return x+y;
}

However the closures project also offers a closures syntax for methods. Does this mean Java is making a shift to a more procedural programming philosphy? May be i am too far on the surface but i dont see the big benefit of closures right now but may be there is one i did not capture yet.