ISC 2012 Object passing program

import java.util.*;
class Combine
{
    static Scanner s=new Scanner(System.in);
    int com[];
    int size;
    Combine(int nn)
    {
        size=nn;
        com = new int[size];
    }

    void  inputArray()
    {
        System.out.println("Enter  numbers"+size+"times");
        for(int i=0;i<size;i++)
        {
            System.out.println("Enter a number");
            com[i]=s.nextInt();
        }
    }

    void Mix(Combine A,Combine B)
    {
        int l=A.com.length;int l1=B.com.length;
        for(int i=0;i<l+l1;i++)
        {
            if(i<l)
                com[i]=A.com[i];
            else
            {
                com[i]=B.com[i-l];
            }
        }
    }

    void sort()
    {

        for(int i=0;i<com.length;i++)
        {
            int c=-1;
            int tmp=com[i];
            for(int j=i+1;j<com.length;j++)
            {
                if(tmp>com[j])
                {
                    tmp=com[j];
                    c=j;
                }
            }
            if(c!=-1)
            {
                tmp=com[i];
                com[i]=com[c];
                com[c]=tmp;
            }
        }
    }

    void display()
    {
        for(int i=0;i<size;i++)
            System.out.print(com[i]+"|");
    }

    public static void main()
    {
        System.out.println("Enter size for first array");
        Combine A= new Combine(s.nextInt());
        A.inputArray();
        System.out.println("Enter size for second array");
        Combine B=new Combine(s.nextInt());
        B.inputArray();
        Combine o=new Combine(A.size+B.size);
        o.Mix(A,B);
        o.sort();
        o.display();
    }
}