package java_serialize;

import java.io.*;

import java.util.Arrays;

/**

* java.io.Externalizable接口定义了

* writeExternal和readExternal方法需要序列化和反序列化的类实现

* 其余的和java.io.Serializable并无差别。

*/

public class Student implements java.io.Externalizable {

private String username;

private String email;

public Student(String _username, String _email) {

setEmail(_email);

setUsername(_username);

}

public Student() {

setUsername(null);

setEmail(null);

}

@Override

public void writeExternal(ObjectOutput out) throws IOException {

out.writeObject(username);

out.writeObject(email);

}

@Override

public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {

this.username = (String) in.readObject();

this.email = (String) in.readObject();

}

public String getEmail() {

return email;

}

public String getUsername() {

return username;

}

public void setEmail(String email) {

this.email = email;

}

public void setUsername(String username) {

this.username = username;

}

@Override

public String toString() {

return "Student{" +

"username='" + username + '\'' +

", email='" + email + '\'' +

'}';

}

}