Question
How do you write this program in Java ? I need a complete program. Thanks! I have added my code for the Employee Interface below.
How do you write this program in Java ? I need a complete program. Thanks!
I have added my code for the Employee Interface below.
Class 3 Chapter 17 (Store data in a file)
Due Wednesday by 8pm Points 10 Submitting a file upload Available Feb 8 at 7pm - Feb 15 at 8pm
Program 3.1 Requirements
Write/Read Test Program using RandomAccessFile and Objects
*Note you should be using methods for the code, everything should not just be dumped in the main method.
Create a new binary data file using RandomAccessFile populate it with integers from 0 to 100 Read the integer binary file and print it to the screen with 10 numbers on each line Update the integer binary file so that all of the even numbers are 2 Read the integer binary file and print it to the screen with 10 numbers on each line
Create a new binary data file using RandomAccessFile populate it with doubles from 0 to 100 Read the double binary file and print it to the screen with 10 numbers on each line Update the double binary file so that all of the odd numbers are 1 Read the double binary file and print it to the screen with 10 numbers on each line
Create a new binary data file using RandomAccessFile populate it with Strings "Hello", "Good Morning", "Good Afternoon", "Good Evening" Note: make all of the Strings the same size. Read the String binary file and print each String on it's own line Update the String binary file so that the last String says "Good Bye" Read the String binary file and print each String on it's own line
Create a new binary data file using ObjectOutputStream Use the Employee object from EmployeeManager Interface Part 1 to populate the file with the data below: 1, 100, "John", "Wayne", Employee.EmployeeType.CONTRACTOR) 2, 1000.0, "Selina", "Kyle", Employee.EmployeeType.CONTRACTOR
Create a new binary data file using RandomAccessFile Use the Employee object from EmployeeManager Interface Part 1 to populate the file with the data below: 1, 100, "John", "Wayne", Employee.EmployeeType.CONTRACTOR) 2, 1000.0, "Selina", "Kyle", Employee.EmployeeType.CONTRACTOR
Example output:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100,
2, 1, 2, 3, 2, 5, 2, 7, 2, 9, 2, 11, 2, 13, 2, 15, 2, 17, 2, 19, 2, 21, 2, 23, 2, 25, 2, 27, 2, 29, 2, 31, 2, 33, 2, 35, 2, 37, 2, 39, 2, 41, 2, 43, 2, 45, 2, 47, 2, 49, 2, 51, 2, 53, 2, 55, 2, 57, 2, 59, 2, 61, 2, 63, 2, 65, 2, 67, 2, 69, 2, 71, 2, 73, 2, 75, 2, 77, 2, 79, 2, 81, 2, 83, 2, 85, 2, 87, 2, 89, 2, 91, 2, 93, 2, 95, 2, 97, 2, 99, 2,
0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0, 24.0, 25.0, 26.0, 27.0, 28.0, 29.0, 30.0, 31.0, 32.0, 33.0, 34.0, 35.0, 36.0, 37.0, 38.0, 39.0, 40.0, 41.0, 42.0, 43.0, 44.0, 45.0, 46.0, 47.0, 48.0, 49.0, 50.0, 51.0, 52.0, 53.0, 54.0, 55.0, 56.0, 57.0, 58.0, 59.0, 60.0, 61.0, 62.0, 63.0, 64.0, 65.0, 66.0, 67.0, 68.0, 69.0, 70.0, 71.0, 72.0, 73.0, 74.0, 75.0, 76.0, 77.0, 78.0, 79.0, 80.0, 81.0, 82.0, 83.0, 84.0, 85.0, 86.0, 87.0, 88.0, 89.0, 90.0, 91.0, 92.0, 93.0, 94.0, 95.0, 96.0, 97.0, 98.0, 99.0, 100.0,
0.0, 1.0, 2.0, 1.0, 4.0, 1.0, 6.0, 1.0, 8.0, 1.0, 10.0, 1.0, 12.0, 1.0, 14.0, 1.0, 16.0, 1.0, 18.0, 1.0, 20.0, 1.0, 22.0, 1.0, 24.0, 1.0, 26.0, 1.0, 28.0, 1.0, 30.0, 1.0, 32.0, 1.0, 34.0, 1.0, 36.0, 1.0, 38.0, 1.0, 40.0, 1.0, 42.0, 1.0, 44.0, 1.0, 46.0, 1.0, 48.0, 1.0, 50.0, 1.0, 52.0, 1.0, 54.0, 1.0, 56.0, 1.0, 58.0, 1.0, 60.0, 1.0, 62.0, 1.0, 64.0, 1.0, 66.0, 1.0, 68.0, 1.0, 70.0, 1.0, 72.0, 1.0, 74.0, 1.0, 76.0, 1.0, 78.0, 1.0, 80.0, 1.0, 82.0, 1.0, 84.0, 1.0, 86.0, 1.0, 88.0, 1.0, 90.0, 1.0, 92.0, 1.0, 94.0, 1.0, 96.0, 1.0, 98.0, 1.0, 100.0,
Hello Good Morning Good Afternoon Good Evening
Employee Manager Interface Part 1:
package examplesweek2;
import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.util.ArrayList; import java.util.List;
/** * Program employee implements Employee Manager File Implementation. * * @author */ public class EmployeeManagerFileImpl implements EmployeeManager {
private List
/** * Method create employee, creates employees. */ @Override public Employee createEmployee(Employee employee) { employee.setId(employees.size() + 1); employees.add(employee); writeToFile(); return employee; }
/** * Method update employee, updates an employee. */ @Override public Employee updateEmployee(Employee employee) { int index = employee.getId() - 1; employees.set(index, employee); writeToFile(); return employee; }
/** * Method read employee, reads an employee. */ @Override public Employee readEmployee(int id) { int index = id - 1; return employees.get(index); }
/** * Method read all employees, reads all employees. */ @Override public List
/** * Method delete employee, deletes an employee. */ @Override public void deleteEmployee(int id) { int index = id - 1; employees.remove(index); writeToFile(); }
/** * Method write to file, writes to file. */ private void writeToFile() { try (BufferedWriter writer = new BufferedWriter(new FileWriter(fileName))) { for (Employee employee : employees) { writer.write(employee.getId() + "," + employee.getFirstName() + "," + employee.getLastName() + "," + employee.getPayPerHour() + "," + employee.getEmployeeType()); writer.newLine(); } } catch (IOException e) { e.printStackTrace(); } }
/** * Method reads from a file. */ private void readFromFile() { try (BufferedReader reader = new BufferedReader(new FileReader(fileName))) { String line; while ((line = reader.readLine()) != null) { String[] values = line.split(","); int id = Integer.parseInt(values[0]); String firstName = values[1]; String lastName = values[2]; double payPerHour = Double.parseDouble(values[3]); EmployeeType employeeType = EmployeeType.valueOf(values[4]); Employee employee = new Employee(id, firstName, lastName, payPerHour, employeeType); employees.add(employee); } } catch (IOException e) { e.printStackTrace(); } }
}
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