Gson 2.13.2

The main changes in this release are just newer dependencies.

What's Changed

• Improved packaging of JPMS module declaration in Gson jar
  This fixes an issue where Eclipse and VS Code users could not refer to the Gson module name com.google.gson. See issue google/gson#2679.
• Remove internal class GsonPreconditions by @​Marcono1234 in google/gson#2879
• Switch to using central-publishing-maven-plugin by @​eamonnmcmanus in google/gson#2900

New Contributors

• @​MukjepScarlet made their first contribution in google/gson#2852
• @​ChrisCraik made their first contribution in google/gson#2856

Full Changelog: google/gson@gson-parent-2.13.1...gson-parent-2.13.2

Gson 2.13.1

What's Changed

• Give FieldNamingStrategy the ability to return multiple String names by @​mfriesen in google/gson#2776
• Remove outdated android-proguard-example by @​Goooler in google/gson#2843
• Adjust Troubleshooting Guide ProGuard / R8 section by @​Marcono1234 in google/gson#2844
• Update dependencies, including the problematic com.google.errorprone:error_prone_annotations:2.37.0.

New Contributors

• @​mfriesen made their first contribution in google/gson#2776
• @​Goooler made their first contribution in google/gson#2843

Full Changelog: google/gson@gson-parent-2.13.0...gson-parent-2.13.1

Gson 2.13.0

What's Changed

• A bug in deserializing collections has been fixed. Previously, if you did something like this:

  gson.fromJson(jsonString, new TypeToken<ImmutableList<String>>() {})
  

  then the inferred type would be ImmutableList<String>, but Gson actually gave you an ArrayList<String>. Usually that would lead to an immediate ClassCastException, but in some circumstances the code might sometimes succeed despite the wrong type. Now you will see an exception like this:

  com.google.gson.JsonIOException: Abstract classes can't be instantiated!
  Adjust the R8 configuration or register an InstanceCreator or a TypeAdapter for this type.
  Class name: com.google.common.collect.ImmutableList
  

  because Gson now really is trying to create an ImmutableList through its constructor, but that isn't possible. Either change the requested type (in the TypeToken) to List<String>, or register a TypeAdapter or JsonDeserializer for ImmutableList.

• The internal classes $Gson$Types and $Gson$Preconditions have been renamed to remove the $ characters. Since these are internal classes (as signaled not only by the package name but by the $ characters), client code should not be affected. If your code was depending on these classes then we suggest making a copy of the class (subject to the license) rather than depending on the new names.

Full Changelog: google/gson@gson-parent-2.12.1...gson-parent-2.13.0