ssd3 practical quiz6

/** * This class contains methods to process arrays of {@link Employee} objects. * * @author Michael * @version 1.0.0 * @see Employee */ public class EmployeeArray { /** * Creates an array with three objects of class {@link Employee}. * <p> * The first element of the array is the object <code>first</code>, the * second element of the array is the object <code>second</code>, and the * third element of the array is the object <code>third</code>. * </p> * * @param first * a {@link Employee} object. * @param second * a {@link Employee} object. * @param third * a {@link Employee} object. * @return an array with the objects <code>first</code>, * <code>second</code>, and <code>third</code>. */ public static Employee[] makeArray(Employee first, Employee second, Employee third) { /* PLACE YOUR CODE HERE */ Employee[] employees = new Employee[3]; employees[0] = first; employees[1] = second; employees[2] = third; return employees; // REMOVE; USED SO THIS FILE COMPILES } /** * Creates a new array from the specified array of {@link Employee} objects. * <p> * The elements in the new array have the same order as those in the * specified array. * </p> * * @param array * an array that contains objects of class {@link Employee}. * @return a <i>new</i> array of the objects in the specified array. */ public static Employee[] copyArray(Employee[] array) { /* PLACE YOUR CODE HERE */ Employee[] newArray = new Employee[array.length]; for (int i = 0; i < array.length; i++) { newArray[i] = array[i]; } return newArray; // REMOVE; USED SO THIS FILE COMPILES } /** * Returns the {@link Employee} object with the specified ID. * * @param array * an array that contains objects of class {@link Employee}. * @param id * an employee ID. * @return The {@link Employee} object with the specifed ID. Returns * <code>null</code> if there are no employees in the specified * array with the specifed ID. */ public static Employee getEmployee(Employee[] array, int id) { for (int i = 0; i < array.length; i++) { if (array[i].getId() == id) { return array[i]; } } return null; } /** * Returns the number of employees whose salary is higher than the specified * dollar amount. * * @param array * an array that contains objects of class {@link Employee}. * @param amount * a dollar amount. * @return the number of employees whose salary is higher than the specified * dollar amount. */ public static int countHigherSalaries(Employee[] array, double amount) { /* PLACE YOUR CODE HERE */ int i = 0, n = 0; for (i = 0; i < array.length; i++) { if (array[i].getSalary() > amount) { n++; } } return n; // REMOVE; USED SO THIS FILE COMPILES } /** * Returns the sum of the salaries of the employees in the specified array. * * @param array * an array that contains objects of class {@link Employee}. * @return the sum of the salaries of the employees in the specified array. */ public static double sumSalaries(Employee[] array) { /* PLACE YOUR CODE HERE */ double sumSalary = 0.0; for (int i = 0; i < array.length; i++) { sumSalary += array[i].getSalary(); } return sumSalary; // REMOVE; USED SO THIS FILE COMPILES } /** * Obtains the highest salary in the specified array. * * @param array * an array that contains objects of class {@link Employee}. * @return the highest salary in the specified array. */ public static double getHighestSalary(Employee[] array) { /* PLACE YOUR CODE HERE */ double highestSalary = 0.0; for (int i = 0; i < array.length; i++) { if (array[i].getSalary() > highestSalary) { highestSalary = array[i].getSalary(); } } return highestSalary; // REMOVE; USED SO THIS FILE COMPILES } /** * Increases the salary of every employee in the specified array by the * specified amount. * * @param array * an array that contains objects of class {@link Employee}. */ public static void increaseAll(Employee[] array, double amount) { /* PLACE YOUR CODE HERE */ for (int i = 0; i < array.length; i++) { array[i].setSalary(amount + array[i].getSalary()); } } public static String displayAll(Employee[] array) { /* PLACE YOUR CODE HERE */ String allEmployee = ""; if (array == null) { return null; } else { for (int i = 0; i < array.length; i++) { allEmployee = array[0].toString() + "\n" + array[1].toString() + "\n" + array[2].toString() + "\n" + array[3].toString(); } } return allEmployee; // REMOVE; USED SO THIS FILE COMPILES } }