How do I write a code for tider of times table in java

|   1   2   3   4   5
-------------------------
   1|   1   2   3   4   5
   2|       4   6   8  10
   3|           9  12  15
   4|              16  20
   5|                  25

import java.util.Scanner ;

public class TimesTables {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in) ;

        System.out.println("Please enter a number: ") ;
        int num = input.nextInt();


        //Your code here

        // use nested loops
        int z = 0;
            System.out.printf("    |");        
        for (int r=1;r<=num;r++){
            System.out.printf("%4d",r );
            z = z+4;
        }
            System.out.println();
        for (int r=0;r<=z+4;r++){
            System.out.printf("-",r);
        }
              
        System.out.println();           
        for (int r=1;r <= num; r++){
            System.out.printf("%4d|", r);
            for(int c=1;c <= num; c++){
                if(r <= c){
                    System.out.printf("%4d", c*r);
                }
            }
                System.out.println("");
        }
        
        
        //TimesTablesPrinter.print(multiples);
    }
}