java

17.Write a Java program that prompts the user to input an integer greater than o which represents the size/height of the triangle shape. The program should print the following triangle shape according to the user input by alternating and + characters. Invalid error message must be displayed if the size is less than 1. Example: if the size of the shape = 4, then the program should output: ! ! + ! ! + + 1 + 1 + !+