In Java

Task 1: Generating Random Characters. In this task, you need to write one RandomCharacter.java file to generate different random characters. The file should contain at least four different methods for the different purposes. 1. getRandomLowerCaseLetter() method: This method is used to get one random lower case character between 'a' and 'z'. 2. getRandomUpperCaseLetter() method: This method is used to get one random upper case letter between 'A' and 'Z'. 3. getRandomDigitCharacter() method: This method is used to get one random digit number between 'O' and 9'. 4. getRandom Character() method: This method is used to get one random character. In the main function, write one program to generate fifteen random characters in each of the above four categories. And then you need to write unit test program by creating one Junit test case to test all the methods you have created