In Java, implement Abstraction in the grading system. Include three different implementation methods in solving the grade. Kindly follow the example of coding below (abstract class should be included): Example:  Prelim 30 Midterm 30  Endterm 40 --------------------- Formula: (Prelim+ Midterm + Endterm)/3

Could someone explain (give like 1 or 2 sentences (nothing too long)) about how JAVA readability can use Orthogonality? I am working on a HW and need to talk about 2 sub-categories (I choose simplicity and orthogonality) and for simplicity, I said "Simplicity can be utilized here too since there is more than one way to accomplish a particular operation (like a+=1; a++; a=a+1).". So I need a simple yet different example on how readability in java can actually use Orthogonality. (NO CODE, just words).

A binary operator is an operation that is performed on two operands. For example, addition is a binary operator that adds two operands (e.g., 2 + 4). In the provided UML diagram, all binary operators have two operands and an execute method that performs the appropriate operation on the operands. The AddOperation class should add the two operands. The SubtractOperation class should subtract the two operands. Here is an example of how a binary operator could be used: IBinaryOperator operator = new AddOperator(8, 12);System.out.println(operator.execute()); // should print 20operator.setLeftOperand(18);System.out.println(operation.execute()); // should print 30 crate a Main.java to test your code

In the class diagram below we have a parking charge class for an object-oriented parking system that is to be designed using java. Briefly explain any implementation decisions and the reasoning behind those without writing the complete code. N.B explain how the implementation will proceed instead of writing code