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对象序列化小例子

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class Xuliehua {
  public static void main(String[] args) {
    writeObject();
    readObject();
  }
  public static void writeObject(){
    User user = new User("zhangsan", "123456", "man");
    ObjectOutputStream oos = null;
    try {
      oos = new ObjectOutputStream(new FileOutputStream("g:\\a.txt"));
      oos.writeObject(user);
    } catch (FileNotFoundException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }finally{
      try {
        oos.close();
      } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }
  }
  public static void readObject(){
    ObjectInputStream ois= null;
    try {
      ois = new ObjectInputStream(new FileInputStream("g:\\a.txt"));
      User user = (User) ois.readObject();
      System.out.println(user);

    } catch (FileNotFoundException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (Exception e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }finally{
      try {
        ois.close();
      } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
    }
  }
}
class User implements Serializable{
  private String name;
  private String pwd;
  private String sex;
  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public String getPwd() {
    return pwd;
  }
  public void setPwd(String pwd) {
    this.pwd = pwd;
  }
  public String getSex() {
    return sex;
  }
  public void setSex(String sex) {
    this.sex = sex;
  }
  public User(String name, String pwd, String sex) {
    super();
    this.name = name;
    this.pwd = pwd;
    this.sex = sex;
  }
  public User() {
    super();
    // TODO Auto-generated constructor stub
  }
  @Override
  public String toString() {
    return "User [name=" + name + ", pwd=" + pwd + ", sex=" + sex + "]";
  }
}