transient

A field modifier that excludes the field from Java's default serialization.

What does transient do in Java?

transient — A field modifier that excludes the field from Java's default serialization.

import java.io.Serializable;

class Session implements Serializable {
    String user = "Ada";
    transient String token = "secret";
}

Level: Journeyman · More Java terms at this level

Updated September 27, 2026