Javaシーケンス化と逆シーケンス化の簡単な例

1.JavaBeanクラスの作成

public class People {
	
	private String name;
	private int age;
	private char sex;
	
	public People() {
		
	}

	public People(String name, int age, char sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public String getName() {
		return name;
	}

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

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public char getSex() {
		return sex;
	}

	public void setSex(char sex) {
		this.sex = sex;
	}
	
}

作成されたルール:
プライベートメンバー変数がメンバー変数に対して操作する共通get/setメソッドSerializableインタフェースを実現するには必ず公有無参の構造方法がある
2.シーケンス化

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;

public class Serialization {
	public static void main(String[] args) {
		//                 
		People people = new People("  ", 20, ' ');
		FileOutputStream fos = null;
		ObjectOutputStream oos = null;
		try {
			fos = new FileOutputStream("F:/001.txt");
			//            
			oos = new ObjectOutputStream(fos);
			//            
			oos.writeObject(people);
			//    
			oos.flush();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			//  
			if (oos != null) {
				try {
					oos.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			if (fos != null) {
				try {
					fos.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	}
}

3.逆シーケンス

import java.io.EOFException;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.ObjectInputStream;

public class Deserialization {
	public static void main(String[] args) {
		FileInputStream fis = null;
		ObjectInputStream ois = null;
		try {
			fis = new FileInputStream("F:/001.txt");
			//           
			ois = new ObjectInputStream(fis);
			//       
			Object obj = ois.readObject();
			if (obj instanceof People) {
				People people = (People) obj;
				System.out.println(people);
			}
		} catch (EOFException e) {
			// TODO: handle exception
			System.out.println("   ");
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			//  
			if (ois != null) {
				try {
					ois.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			if (fis != null) {
				try {
					fis.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	}
}