For some reason i get:
Code:
 ryan@ryan-desktop:~/Documents/Programs/Java_Programming/Labs_1068/Lab_4$ javac Server.java
Server.java:78: variable a might not have been initialized
					System.out.println("gcd(" + a + ", " + b + ") = " + Client.gcd(a, b));	
					                            ^
Server.java:78: variable b might not have been initialized
					System.out.println("gcd(" + a + ", " + b + ") = " + Client.gcd(a, b));	
					                                       ^
Server.java:106: variable a might not have been initialized
					System.out.println("MaxFactor(" + a + ", " + b + ") = " + Client.maxFactor(a, b));
					                                  ^
Server.java:106: variable b might not have been initialized
					System.out.println("MaxFactor(" + a + ", " + b + ") = " + Client.maxFactor(a, b));
					                                             ^
Server.java:131: variable a might not have been initialized
					Client.fibonaci(a);
					                ^
Server.java:156: variable a might not have been initialized
					System.out.println("aPower(" + a + ") = " + Client.aPower(a));
					                               ^
Server.java:181: variable a might not have been initialized
					System.out.println("aPowerOf2(" + a + ") = " + Client.aPowerOf2(a));
When i try to compile this:

Code:
import java.util.*;

public class Server
{
	public static void main(String[] args)
	{
		Scanner scan = new Scanner(System.in);
		int Case = 0;
		int Counter = 1;
		int Counter_2 = 1;
		int Counter_3 = 1;
		int a, b, m;

		System.out.println("Welcome to the Math Wizard!");
		while(Counter == 1)
		{
			System.out.println();
			System.out.println("If you would like to find the greatest common divisor ENTER 1.");
			System.out.println("If you would like to find the Max Factor ENTER 2.");
			System.out.println("If you would like to find the Fibonaci sequence ENTER 3.");
			System.out.println("If you would like to find what your number is the power of ENTER 4.");
			System.out.println("If you would like to find out what power of two your number is ENTER 5.");
			System.out.println("If you would like to leave the program now ENTER 6.\n");
			
			Counter_2 = 1;
			Counter_3 = 1;

			while(Counter_2 == 1)	
			{						
				try
				{	
					System.out.print("Please enter your number: ");		
					Case = scan.nextInt();
					m = 0;
				}
				catch(InputMismatchException e)
				{
					scan.next();					
					System.out.println("Not a numeric character!");
					System.out.println("Please try again!");
					m = 1;
				}
				if(m == 1)
					;
				else
					Counter_2 = 2;
			}
		
			switch(Case)
			{
				case 1:
				{
					while(Counter_3 == 1)
					{
						try
						{
							System.out.println("Please enter two numbers: ");
							System.out.print("a = ");
							a = scan.nextInt();
							System.out.print("b = ");
							b = scan.nextInt();
							m = 0;
						}
						catch(InputMismatchException e)
						{
							scan.next();					
							System.out.println("Not a numeric character!");
							System.out.println("Please try again!");
							m = 1;
						}
						if(m == 1)
							;
						else
							Counter_2 = 2;
					}			
					System.out.println("gcd(" + a + ", " + b + ") = " + Client.gcd(a, b));	
					break;
				}
				case 2:
				{
					while(Counter_3 == 1)
					{
						try
						{
							System.out.println("Please enter two numbers: ");
							System.out.print("a = ");
							a = scan.nextInt();
							System.out.print("b = ");
							b = scan.nextInt();
							m = 0;
						}
						catch(InputMismatchException e)
						{
							scan.next();					
							System.out.println("Not a numeric character!");
							System.out.println("Please try again!");
							m = 1;
						}
						if(m == 1)
							;
						else
							Counter_2 = 2;
					}	
					System.out.println("MaxFactor(" + a + ", " + b + ") = " + Client.maxFactor(a, b));
					break;
				}
				case 3:
				{				
					while(Counter_3 == 1)
					{
						try
						{
							System.out.print("Please enter one number: ");
							a = scan.nextInt();
							m = 0;
						}
						catch(InputMismatchException e)
						{
							scan.next();					
							System.out.println("Not a numeric character!");
							System.out.println("Please try again!");
							m = 1;
						}
						if(m == 1)
							;
						else
							Counter_2 = 2;
					}	
					Client.fibonaci(a);
					break;
				}
				case 4:
				{
					while(Counter_3 == 1)
					{
						try
						{
							System.out.print("Please enter one number: ");
							a = scan.nextInt();
							m = 0;
						}
						catch(InputMismatchException e)
						{
							scan.next();					
							System.out.println("Not a numeric character!");
							System.out.println("Please try again!");
							m = 1;
						}
						if(m == 1)
							;
						else
							Counter_2 = 2;
					}	
					System.out.println("aPower(" + a + ") = " + Client.aPower(a));
					break;
				}
				case 5:
				{
					while(Counter_3 == 1)
					{
						try
						{
							System.out.print("Please enter one number: ");
							a = scan.nextInt();
							m = 0;
						}
						catch(InputMismatchException e)
						{
							scan.next();					
							System.out.println("Not a numeric character!");
							System.out.println("Please try again!");
							m = 1;
						}
						if(m == 1)
							;
						else
							Counter_2 = 2;
					}	
					System.out.println("aPowerOf2(" + a + ") = " + Client.aPowerOf2(a));
					break;
				}
				default:
				{
					System.out.println("\nThank you for using Math Wizard!");
					System.out.println("Have a nice day!");
					Counter = 2;
					break;
				}
			}	
		}	
	}
}
Any help would be greatly appreciated. Thank you.