Write a program that prompts the user for a postal code and then determines if it is valid or not. To be valid the postal code must have exactly 7 characters, in the format of X#X #X#, where X is a letter and # is a number, with a space in the middle. Your program must first verify if the input has 7 characters if no then the program will immediately conclude that The postal code is not valid; if yes then it will further determine if the input matches the X#X #X# format and then make the decision whether the input is valid or not. You are encouraged to try to minimize the unnecessary steps the program must go through after an input is determined as invalid. Rewrite the program you created to answer the second question of lab 5 to implement the following change: when report The postal code is not valid your program must point out where the problem is either the length of the postal code is not correct (if it doesnt contain 7 characters) or character X is not right, where X is an integer in the range of 1 to 7, which is the position of the character that your program first finds problem in the postal code. This should be a java program.