Water Jug Problem

Water Jug Problem

import java.util.Scanner;

public class waterjug {
    Scanner scan=new Scanner(System.in);
    int maxA,maxB,desA,desB,a,b;
    
    
    public static void main(String args[])
    {
        System.out.println("*** Water Jug ***\n\n");
        waterjug jug=new waterjug();
        jug.input();
        jug.mix();
    }
    
    
    void input()
    {
        System.out.println("Enter the capacity of the bigger jug.");
        maxA=scan.nextInt();
        System.out.println("Enter the capacity of the smaller jug.");
        maxB=scan.nextInt();
        desA=maxA+1;
        desB=maxB+1;
        while(desA>maxA || desB>maxB)
        {
            System.out.println("Enter the desired water in the bigger jug.");
            desA=scan.nextInt();
            // Setting value desB =0;
            desB = 0; 
        }
    }
    void mix()
    {
        a=0;
        b=0;
        
        while(a!=desA || b!=desB)
        {
            if(b==0)
            {
                fillB();
            }
            else if(a<maxA && b>0)
            {
                B2A();
            }
            else if(a==maxA)
            {
                emptyA();
            }
            System.out.println(a+","+b);
        }
    }
    
    void fillB()
    {
        b=maxB;
    }
    
    void B2A()
    {
        while(a!=maxA && b!=0)
        {
            a++;
            b--;
        }
    }
    
    void emptyA()
    {
        a=0;
    }
}