HomeWork7

Task1.java

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.Reader;

public class Task1 {
    public static void main(String[] args) throws IOException {
        File file = new File("D:/test-java.txt");
        file.createNewFile();

        FileOutputStream outputStream = new FileOutputStream(file);
        outputStream.write("Hello, dear student!\nHow are you?".getBytes());
        outputStream.close();

        System.out.println(getAllTextFromFile(file));

        file.delete();
    }

    private static void getAllTextFromFile(file){
        return;
    }

    }

Task2.java

import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;

    public class Task2 {
        public static void main(String[] args) throws IOException {
            File file = new File("D:/test-java.txt");
            file.createNewFile();

            FileOutputStream outputStream = new FileOutputStream(file);
            outputStream.write("Hello, dear student!\nHow are you?".getBytes());
            outputStream.close();

            TextFileReader textFileReader = new TextFileReader(file);
            System.out.println(textFileReader.getContentAsString());

            file.delete();
        }

        {

            try (FileReader reader = new FileReader("D:/test-java.txt")) {
                // читаем посимвольно
                int c;
                while ((c = reader.read()) != -1) {

                    System.out.print((char) c);
                }
            } catch (IOException ex) {

                System.out.println(ex.getMessage());
            }

            {
            }
        }

        private static class TextFileReader {
            public boolean getContentAsString() {
            }
        }
    }

Task3.java

import java.util.Scanner;

public class Task3 {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        System.out.print("First name: ");
        String name = in.nextLine();
        System.out.print("Last name: ");
        String name2 = in.nextLine();
        System.out.print("Phone number: ");
        int phonenumber = in.nextInt();
        System.out.print("Address: ");
        String name3 = in.nextLine();
        System.out.println("First name: " + name + "Last name: " + name2 + "Phone number: " + phonenumber + "Address: " + name3);
    }
}

Task5.java

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.time.LocalDate;

public class Human {

    public static void main(String[] args) throws CloneNotSupportedException, ClassNotFoundException {
        Human h1 = new Human("Vasya", "Bondar", LocalDate.of(15));
        Human h2 = new Human("Petro", "Kazyvkin", LocalDate.of(17));

        Human h3 = (Human) h1.clone();

        System.out.println(h1.toString());
        System.out.println(h2.toString());
        System.out.println(h3.toString());

        try {
            FileOutputStream fos = new FileOutputStream("C:\\Java\\human.txt");
            ObjectOutputStream oos = new ObjectOutputStream(fos);
            try {
                oos.writeObject(h1);
                oos.writeObject(h2);
                oos.writeObject(h3);
            } finally {
                oos.close();
            }

            Human h11, h22, h33;
            FileInputStream fis = new FileInputStream("C:\\Java\\human.txt");
            ObjectInputStream oin = new ObjectInputStream(fis);
            try {
                h11 = (Human) oin.readObject();
                h22 = (Human) oin.readObject();
                h33 = (Human) oin.readObject();
                System.out.println(h11.toString());
                System.out.println(h22.toString());
                System.out.println(h33.toString());
            } finally {
                oin.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

}