Sort Each Column (Ascending)

import java.util.*;
public class SortMatrixAEC
{
    public static void main(String args[])
    {
        int row=0,col=0,temp=0;
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter no.of rows: ");
        row=sc.nextInt();
        System.out.print("Enter no.of columns: ");
        col=sc.nextInt();
        int ar[][]=new int[row][col];
        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();
            }
        }
        for(int i=0;i<col;i++)
        {
            for(int j=0;j<row;j++)
            {
                for(int k=0;k<row-1-j;k++)
                {
                    if(ar[k][i]>ar[k+1][i])
                    {
                        temp=ar[k][i];
                        ar[k][i]=ar[k+1][i];
                        ar[k+1][i]=temp;
                    }
                }
            }
        }
        System.out.println("Each column sorted matrix:-");
        for(int i=0;i<row;i++)
        {
            for(int j=0;j<col;j++)
            {
                System.out.print(ar[i][j]+" ");
            }
            System.out.println();
        }
    }
}