org.sonar.l10n.java.rules.squid.S2062.html Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of java-checks Show documentation

There is a newer version: 8.9.0.37768

The readResolve() method allows final tweaks to the state of an object during deserialization. Non-final classes which implement readResolve(), should not set its visibility to private since it will then be unavailable to child classes.

Noncompliant Code Example
public class Fruit implements Serializable { 
  private static final long serialVersionUID = 1;

  private Object readResolve() throws ObjectStreamException  // Noncompliant
  {...}

  //...
}

public class Raspberry extends Fruit implements Serializable {  // No access to parent's readResolve() method
  //...
}


Compliant Solution
public class Fruit implements Serializable { 
  private static final long serialVersionUID = 1;

  protected Object readResolve() throws ObjectStreamException
  {...}

  //...
}

public class Raspberry extends Fruit implements Serializable {
  //...
}