Sunday, April 17, 2011

Using transient keyword in serialization

Serializable objects are much more convenient because everything is serialized there automatically. You can forbid serialization of any member variable object with the transient modifier. It tells the JVM: "Do not save and restore this field, please; somebody else will take care of this field." Listing D shows how it looks.

import java.io.*;
import java.util.*;

class LoginCredentials implements Serializable {

private String username;
private transient String password;

LoginCredentials(String name, String password) {
username = name;
this.password = password;
}

public static void main(String[] args) 
throws IOException, ClassNotFoundException {
LoginCredentials = new LoginCredentials("peter","mikhalenko");
}
}

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