java对象序列化存储到文件、从文件中反序列化读取java对象

1.首先，对即将要操作的java对象的类需要实现序列化接口Serializable，代码如下：
import java.io.Serializable;

public class User implements Serializable{

private static final long serialVersionUID = 1L;

private String name = null;
private String pwd = null;
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;
}
@Override
public String toString() {
	return "User [name=" + name + ", pwd=" + pwd + "]";
}

}
2.将user类序列化存储到文件中，并从文件中反序列化读取java类，代码如下：
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class SerializedUser {
public static void main(String[] args) throws Exception {
User user = new User();
user.setName(“zgj”);
user.setPwd(“zgjzzm”);
System.out.println(user.toString());
//将user对象序列化存储到文件
ObjectOutputStream ots = new ObjectOutputStream(new FileOutputStream(“C:\Users\Administrator\Desktop\编程学习\user.xml”));
ots.writeObject(user);
ots.flush();
ots.close();
//从文件中反序列化读取user对象信息
ObjectInputStream in = new ObjectInputStream(new FileInputStream(“C:\Users\Administrator\Desktop\user.xml”));
User user2 = (User)in.readObject();
System.out.println(user2.toString());
}
}

注意：文件类型可以使xml，也可以是txt

运行结果: