public class process{ static int result; public static int addition(int a, int b) { result = a + b; return result; } public static int subtraction(int a, int b) { result = a-b; return result; } public static int multiplication(int a, int b) { result = a*b; return result; } public static void main(String(] args) ( System.out.print("Enter First Number :"); Scanner s = new Scanner(System.in); int a = s.nextint(); System.out.print("Enter Second Number:"); Scanner p = new Scanner(System.in); Int b = p.nextint(); addition(a,b); System.out.printin("First Number :" +a); System.out.printin("Second Number :" +b); System.out.printin("Addition Result :" +result): substruction(a,b); System.out.printin("Subtraction Result:" +result); multiplaction(a,b): System.out.printin("Multiplication Result " +result); What does the above program do? Explain it.

Fix all errors to make the code compile and complete. //MainValidatorA3 public class MainA3 { public static void main(String[] args) { System.out.println("Welcome to the Validation Tester application"); // Int Test System.out.println("Int Test"); ValidatorNumeric intValidator = new ValidatorNumeric("Enter an integer between -100 and 100: ", -100, 100); int num = intValidator.getIntWithinRange(); System.out.println("You entered: " + num + "\n"); // Double Test System.out.println("Double Test"); ValidatorNumeric doubleValidator = new ValidatorNumeric("Enter a double value: "); double dbl = doubleValidator.getDoubleWithinRange(); System.out.println("You entered: " + dbl + "\n"); // Required String Test System.out.println("Required String Test:"); ValidatorString stringValidator = new ValidatorString("Enter a required string: "); String requiredString =…

TASK 1. Variables. Review variables, Implement the following code, make sure it runs without errors. Change Summation Integers problem to Finding the minimum problem.

public class LabProgram {   public static void main(String args[]) {   Course course = new Course(); String first;  // first name       String last;   // last name       double gpa;    // grade point average              first = "Henry";       last = "Cabot";       gpa = 3.5;       course.addStudent(new Student(first, last, gpa));  // Add 1st student              first = "Brenda";       last = "Stern";       gpa = 2.0;       course.addStudent(new Student(first, last, gpa));  // Add 2nd student              first = "Jane";       last = "Flynn";       gpa = 3.9;       course.addStudent(new Student(first, last, gpa));  // Add 3rd student              first = "Lynda";       last = "Robison";       gpa = 3.2;       course.addStudent(new Student(first, last, gpa));  // Add 4th student   course.printRoster(); }     } // Class representing a student public class Student {   private String first;  // first name private String last;   // last name private double gpa;    // grade point average…