Why is my else statement not working in java

how to use if else in java?

the multiplicate operator isnt working in my Java code, how can I fix it?

class overload

     {

          int x;

               int y;

          void add(int a)

          {

               x = a + 1;

          }

          void add(int a, int b)

          {

               x = a + 2;

          }

     }

     class Overload_methods

     {

          public static void main(String args[])

          {

               overload obj = new overload();

               int a = 0;

               obj.add(6);

               System.out.println(obj.x);

          }

     }

Using MVC, servlets, jsps and java maven how would i implement Intended redirects for logged in users. I already have a project using adlister I need to add this to it. using java maven

Run the Java program per the instructions in the "Peachy Assignments" description by having (and commenting out) the volatile declaration of the Req and Ack variables. This can make the execution effects of Req and Acq becoming vvisible across threads different (e.g. compilers can rearrange Req to be after Ack, as they are two independent and unrelated variables). Observe when the run without volatiles hangs (what input value did you supply)? 

Provide two answers:

* The input number that seemed to hang the execution 50% of the time or more

Write a 300-character (roughly) description of the purpose of this test and what you observed.
The notion of "happens before" is mentioned in my "Peachy Assignments". It basically says that if two instructions A and B come in a certain order, their executions must appear to be in that order also. This is achieved by slapping the "volatile" variable annotation.

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Write an algorithm with its corresponding code implementation in Java for Euclid's method of finding the GCD and the sieve of Eratosthenes.

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Find fibonacci number 
example : 
fibo of 0 = 1
fibo of 1 = 1
fibo of 2 = fibo 0 + fibo 1 = 2
fibo of 3  = fibo 2 + fibo 1 = 3
fibo of 4 = fibo 3 + fibo 2 = 5
fibo of 5 = fibo 4 + fibo 3 = 8
write function 
int fibo(int number) 
-> return fibo value of paramerter.

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For this method you will be given a numerator and a denominator and return true if they are reduced and false if not.
public static boolean reduced (int num, int denom)

finally your friend needs a method to check if one of the players has won. This determines if either color has 0% remaining pieces. if one color has one you will return that color if no one has won you will return "NONE". 

public String hasWon (char[][] board)

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