Program in Java and explain please

Write a program that calculates the simple interest on the principal, rate of interest and number of years provided by the user. Enter principal, rate and time through the console using the Scanner class. Interest = Principal * Rate * Time Write a program having a concrete subclass that inherits three abstract methods from a superclass. Provide the following three implementations in the subclass corresponding to the abstract methods in the superclass: 1. Check for uppercase characters in a string, and return true or false' depending if any are found. 2. Convert all of the lower case characters to uppercase in the input string, and return the result. 3. Convert the input string to integer and add 10, output the result to the console. Create an appropriate class having a main method to test the above setup