Write a java program that returns true or false, based on the conditions above. Here are some sample inputs and output:

Note: The input will be a non-empty word consisting of uppercase and lowercase latin letters.

Please include a main method to test the code.

Given a word, you need to judge whether the usage of capitals in it is right or not. We define the usage of capitals in a word to be right when one of the following cases holds: 1. All letters in this word are capitals, like "USA". 2. All letters in this word are not capitals, like "leetcode". 3. Only the first letter in this word is capital, like "Google". Otherwise, we define that this word doesn't use capitals in a right way. Example 1: Input: "USA" Output: True Example 2: Input: "Flag" Output: False