JavaExercises/Java 1/HW5Lesson.java at master · biblelamp/JavaExercises · GitHub

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/**

* Java. Level 1. Lesson 5. Example of homework

* @author Sergey Iryupin

* @version dated May 25, 2018

* @link https://github.com/<your_nik> || null

import java.io.FileWriter;

import java.io.IOException;

import java.util.List;

import java.util.ArrayList;

import java.nio.file.Paths;

import java.nio.file.Files;

import java.nio.charset.StandardCharsets;

class HW5Lesson {

public static void main(String[] args) {

// define and fill array of employees

Employee[] employees = {

new Employee("Ivanov Ivan", "Engineer",

"iivanov@mail.com", "2312312", 30000, 30),

new Employee("Petrov Petr", "Lead Engineer",

"ppenrov@mail.com", "2365113", 42000, 39),

new Employee("Vasilev Vasil", "Head of Department",

"vvasilev@mail.com", "2365001", 55000, 55),

new Employee("Sidorov Sidor", "Assistant",

"ssidorov@mail.com", "2365223", 25000, 42),

new Employee("Sergeev Sergey", "Trainee",

"ssergeev@mail.com", "2365113", 15000, 25)

};

// show all employees older than 40 year

for (Employee employee : employees)

if (employee.getAge() > 40)

System.out.println(employee);

// write array to the CSV file

try (FileWriter file = new FileWriter("employee.txt")) {

for (Employee employee : employees)

file.write(employee.getDataInCSV() + "\n");

} catch (IOException ex) {

ex.printStackTrace();

}

// read all lines from file

List<String> lines = new ArrayList<>();

try {

lines = Files.readAllLines(Paths.get("employee.txt"),

StandardCharsets.UTF_8);

} catch (IOException ex) {

ex.printStackTrace();

}

// parsing CSV lines

int index = 0;

employees = new Employee[lines.size()];

for (String line : lines) {

String[] field = line.split(",");

employees[index] = new Employee(

field[0], field[1], field[2], field[3],

Integer.parseInt(field[4]), Integer.parseInt(field[5]));

index++;

}

/**

* Class Employee

class Employee {

private String name;

private String position;

private String email;

private String phone;

private int salary;

private int age;

public Employee(String name, String position, String email, String phone,

int salary, int age) {

this.name = name;

this.position = position;

this.email = email;

this.phone = phone;

this.salary = salary;

this.age = age;

}

public int getAge() { // getter for age

return age;

}

public String getDataInCSV() {

return name + "," + position + "," + email + "," + phone + "," +

salary + "," + age;

}

@Override

public String toString() { // overrided method toString()

return (name +

"\n| Position: " + position +

"\n| Email: " + email +

"\n| Phone: " + phone +

"\n| Salary: " + salary +

"\n| Age: " + age);

}

JavaExercises/Java 1/HW5Lesson.java at master · biblelamp/JavaExercises · GitHub

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