serialization

package demo.serialization;

import java.io.Serializable;

public class Employee implements Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	/**
	 * 
	 */
	private String name;
	private String position;
	// 직렬화, 역직렬화 대상에서 제외된다.
	private transient int password;
	private Family child;
	
	public Employee() {}

	
	
	public Employee(String name, String position, int password, Family child) {
		super();
		this.name = name;
		this.position = position;
		this.password = password;
		this.child = child;
	}



	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getPosition() {
		return position;
	}

	public void setPosition(String position) {
		this.position = position;
	}

	public int getPassword() {
		return password;
	}

	public void setPassword(int password) {
		this.password = password;
	}

	public Family getChild() {
		return child;
	}

	public void setChild(Family child) {
		this.child = child;
	}
	
	
}

package demo.serialization;

import java.io.Serializable;

public class Family implements Serializable {

	private String name;
	private int count;
	
	public Family() {}

	public Family(String name, int count) {
		this.name = name;
		this.count = count;
	}
	
	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getCount() {
		return count;
	}

	public void setCount(int count) {
		this.count = count;
	}
}

package demo.serialization;

import java.io.FileOutputStream;
import java.io.ObjectOutputStream;

public class SerializationDemo1 {

	public static void main(String[] args) throws Exception {
		
		Family f = new Family("자녀", 2);
		Employee employee = new Employee();
		employee.setName("홍길동");
		employee.setPosition("과장");
		employee.setPassword(1234);
		employee.setChild(f);
		
		FileOutputStream fos = new FileOutputStream("c:/temp/emp.sav");
		ObjectOutputStream oos = new ObjectOutputStream(fos);
		
		// void writeObject(Object o)
		// 객체를 직렬화한다.
		oos.writeObject(employee);
		
		oos.close();
	}
}

package demo.serialization;

import java.io.FileInputStream;
import java.io.ObjectInputStream;

public class DeserializationDemo1 {

	public static void main(String[] args) throws Exception {
		
		FileInputStream fis = new FileInputStream("c:/temp/emp.sav");
		ObjectInputStream ois = new ObjectInputStream(fis);
		
		// Object readObject()
		// 스트림으로 읽어들인 데이터를 이용해서 객체를 복원(역직렬화)한다.
		Object obj = ois.readObject();
		// System.out.println(obj);
		Employee emp = (Employee) obj;
		System.out.println("이름 : " + emp.getName());
		System.out.println("직위 : " + emp.getPosition());
		System.out.println("비번 : " + emp.getPassword());
		System.out.println("가족 : " + emp.getChild().getName());
		System.out.println("가족수 : " + emp.getChild().getCount());
		
		ois.close();
	}
}