Do correctly java

1)Write a program to accomplish the following: Create an Interface by the name Calculator and add any 3 abstract methods. Create the object of the same interface and execute each of the methods.

2)

Ram is the owner of 2 schools Delhi Public School and Cambridge Public School.

He has got 2 crore funds from various sources for the development of his school.

With the available funds, Ram decides to enhance the classroom experience in each school.

Delhi Public School has 4 classrooms having 5 students each and Cambridge Public School has 2 classrooms with 6 students each.

Ram wants to take the feedback from each student from each class of the school.

Depict this scenario using programming to collect and display the review of each student.

3)

Java has 8 primitive data types; char, boolean, byte, short, int, long, float, and double.

A byte is an 8-bit signed integer. A short is a 16-bit signed integer. An int is a 32-bit signed integer. A long is a 64-bit signed integer.

Given an input integer, you must determine which primitive data types are capable of properly storing that input.

Sample Input: 100

Sample Output: byte, short, int, long