Cyclic Shift (Row)

Given a matrix the task is to cyclic shift the elements of each row upwards by one place.

Example:

31
92
48

92
48
31
Java
import java.util.*;
public class ShiftRow
{
    int ar[][];int row;int col;
    ShiftRow(int m,int n)
    {
        row=m;
        col=n;
        ar=new int[m][n];
    }
    public void getElements()
    {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter matrix elements:-");
        for(int i=0;i<row;i++)
        {
            for(int j=0;j<col;j++)
            {
                ar[i][j]=sc.nextInt();
            }
        }
    }
    public void doShift(ShiftRow A)
    {
        for(int i=0;i<col;i++)
        {
            for(int j=0;j<row-1;j++)
            {
                ar[j][i]=A.ar[j+1][i];
            }
            ar[row-1][i]=A.ar[0][i];
        }
    }
    public void displayMatrix()
    {
        for(int i=0;i<row;i++)
        {
            for(int j=0;j<col;j++)
            {
                System.out.print(ar[i][j]+"\t");
            }
            System.out.println();
        }
    }
    public static void main(String args[])
    {
        int m=0,n=0;
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter no.of rows: ");
        m=sc.nextInt();
        System.out.print("Enter no.of columns: ");
        n=sc.nextInt();
        ShiftRow ob1=new ShiftRow(m,n);
        ShiftRow ob2=new ShiftRow(m,n);
        ob1.getElements();
        System.out.println("Original Matrix:-");
        ob1.displayMatrix();
        ob2.doShift(ob1);
        System.out.println("New Matrix:-");
        ob2.displayMatrix();
    }
}
Java