μ§λ ¬ν (Serialization)
κ°μ²΄λ₯Ό μ€νΈλ¦Όμ ν΅ν΄ μ μ‘νκ±°λ νμΌλ‘ μ μ₯ μν΄ λ°μ΄νΈ ννλ‘ λ³ννλ κ³Όμ
μ§λ ¬ν μμμ½λ
β’
Person.java
import java.io.Serializable;
public class Person implements Serializable {
private static final long serialVersionUID = 1L;
private String name;
private int age;
public Person(String name, int age) {
this.name = name;
this.age = age;
}
@Override
public String toString() {
return "Person{name='" + name + "', age=" + age + "}";
}
}
Java
볡μ¬
β’
SerializePerson.java
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.util.Scanner;
public class SerializePerson {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
// μ¬μ©μλ‘λΆν° μ
λ ₯ λ°κΈ°
System.out.print("Enter name: ");
String name = scanner.nextLine();
System.out.print("Enter age: ");
int age = scanner.nextInt();
// Person κ°μ²΄ μμ±
Person person = new Person(name, age);
// νμΌμ μ§λ ¬ν
try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("Person.dat"))) {
oos.writeObject(person);
System.out.println("Person object has been serialized and saved to Person.dat");
} catch (IOException e) {
e.printStackTrace();
} finally {
scanner.close();
}
}
}
Java
볡μ¬
μμ§λ ¬ν μμμ½λ
import java.io.FileInputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
public class DeserializePerson {
public static void main(String[] args) {
// νμΌμμ μμ§λ ¬ν
try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream("Person.dat"))) {
Person person = (Person) ois.readObject();
System.out.println("Person object has been deserialized: " + person);
} catch (IOException | ClassNotFoundException e) {
e.printStackTrace();
}
}
}
Java
볡μ¬
SerialVersionUID
ν΄λμ€μ ꡬ쑰 λ³κ²½ μ, μ΄λ―Έ μ§λ ¬νλ κ°μ²΄μ ν΄λμ€κ°μ νΈνμ±μ κ²μ¦νκΈ° μν μλ³μ
import java.io.Serializable;
public class Person implements Serializable {
private static final long serialVersionUID = 1L; // κ³ μ μλ³μ
private String name;
private int age;
public Person(String name, int age) {
this.name = name;
this.age = age;
}
// Getter, Setter, toString() λ± νμν λ©μλλ€
}
Java
볡μ¬
λ³κ²½ μ
private static final long serialVersionUID = 1L;
Java
볡μ¬
β’
λ³μ μΆκ°
private String name;
private int age;
private String address;
Java
볡μ¬
λ³κ²½ ν
private static final long serialVersionUID = 2L;
Java
볡μ¬