Write a program to print the area of a rectangle by creating a class named 'Area' having two methods. First method named as 'setDim' takes length and breadth of rectangle as parameters and the second method named as 'getArea' returns the area of the rectangle. Length and breadth of rectangle are entered through keyboard. 4. Create a class named 'PrintNumber' to print various numbers of different datatypes by creating different methods with the same name 'printn' having a parameter for each datatype. 5. What is the output of this question? class Test1 { public static void main(String[] args) { int x = 20; System.out.println(x); } static { int x = 10; System.out.print(x + " "); }

PYTHON PROGRAMMING ONLY NEED HELP

JAVA. THIS IS A PROGRAMMING ASSIGNMENT NOT A WRITING ASSIGNMENT IF YOU ANSWERED BEFORE DO NOT ANSWER AGAIN PLEASE DO NOT PASTE A PAPER Design a class to store the following information about computer scientists⦁ Name⦁ Research area(s)⦁ Major contribution A scientist may have more than one area of research.⦁ Implement the usual setters and getters methods ⦁ Implement a method that takes a research area as an input and return thenames of scientists associated with that area ⦁ Implement a method that takes a word as an input and return the names ofscientists whose contribution mention that word Next, perform desktop research to find at least five prominent black computerscientists, with their research area(s) and major contribution, and store this data intoobjects of the class you designed. You can just hardcode this data. No user input needed.Define JUnit tests to check your research area and contribution search methods.

CS 1105 Chapter 3 Question 7.4 Construct an NFA model that represents the language by the regular expression: x(y ∪ (xy)∗)(x ∪ yy)∗xy

In Java: Define a class called Exam that manages a set of up to25 Question objects. Define the add method of the mainExam class to add a question to the exam. Define theassignExam method of the Exam class to present eachquestion in turn to the user, accept an answer for each one, and keeptrack of the results. Define a class called ExamTime witha main method that populates the exam, presents it, and prints thefinal results.

Use the class diagram below to create a Parking Charge class for an object-oriented parking system. Write your code using java. Classes should contain properties and method implementations. N.B. Try to make your code readable.