Write a Java program that displays a shape representing capital letter of N as shown in the examples below. The program should ask the user to enter an integer number size greater than or equal to 4 representing the size of the letter N in terms of number of rows and columns Appropriate error message should be displayed if the user input for size is invalid. Examples Enter size >=4 : 4 * * Enter size >4 : 6 * * Enter size >=4 : 7 * * ** ** * ** *** * ** * ** * * * *