Q1. Write a Java program that takes a positive odd integer n and returns the sum of odd integers from 1 to n using recursive method named odd Sum. Q2. Develop a class Computers with the following characteristics.i Class states or fields: Compno. Compcolor. Compmemerx Input the values of the state as parameters (2001.Black, 100) Create getter methods to show the values of the fields. Update the Compng and Compmemory.as (2004, 200) by using setter methods. Q3. Write a java program that creates a user-define class for objects of an Employee (name, age, salary).[ Hint: Create an array of objects from Employee class] Q4. Develop a class Devices and do the following tasks: Create an array hardware of..String and add the following data Lu Printec Keyboard Mouse Scanner"} Search the element "Mouse" using sequential Search algorithm