SonarLint V3: Fields in a “Serializable” class should either be transient or serializable for List interface

Question

My question is very similar to this except that this issue I have encountered in SonarLint V3 (squid:S1948).

My code is :

public class Page          


        

Answer 1

SonarLint is right. The problem is that there is no guarantee that elements field is serializable. You need to add type bound on T type like this

public class Page<T extends Serializable> implements Serializable {}

This way the list will be serializable if implementation chosen for it is serializable (which is true for standard collection types in Java).