Math 130 Java programming

The important step to this project is the diagonal amount of data shown in the table. How do I show only the parts of the numbers as in the photo and not all of the numbers? Please help thank you.

Math 130 Java programming "Multiplication Table". Write a Java program entitled: MultTable to create a multiplication table for all combinations of values 0 through 15 . The result of your program should be as follows: Suggestions: Use nested for loops! Develop the program using pseudo-code in a series of steps that successively refine the result until it appears like the example above. Do not use arrays in this program. Keep the program VERY simple. Notice that the number of spaces required for each row is dependent on which row you are in. Your program must print out the "headers" pictured also, which includes the dashes ('-) along the horizontal and vertical bars ("l) along the vertical. If your table lacks alignment as shown above you will receive very little credit. That is one the challenging parts for this lab assignment