What is the output of this simple java code 6 and not 4? -

what output of simple java code 6 , not 4? since int x = 10 , int y = 15, how come able declare int x , int y again 5 , x-2? thought can declare value of int once? thanks, sorry i'm new java.

here's code:

public class shortq {      public static void main (string args[])      {          int x = 10 , y =15;          x = 5;          y = x-2;          system.out.println(x+1);      } }  

also since int x = 10 , int y = 15, how come able declare int x , int y again 5 , x-2? thought can declare value of int once? thanks, sorry i'm new java.

x = 5;  y = x-2; 

with above not declaring variable doing assignment. in post there 1 time declaration i.e int x = 10 , y =15;

how output of simple java code 6 , not 4?

as x 5 , adding 1 while printing

 x = 5;  system.out.println(x+1);