java.lang.IllegalArgumentException: com.example.exercise: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent.

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

ConcurrentModificationException Immutable collections never throw these. The example below is contrived, but it illustrates the problem of updating a mutable collection while iterating over its ...

After Airbnb and ClassPass began selling virtual classes because of the pandemic, Apple tried to collect its commission on the sales.

Immutable class is a class which once created, its contents can not be changed. Immutable objects are the objects whose state can not be changed once constructed. e.g. String class Since the state of ...

In response to my recent blog posting Immutable Java Objects, Matt brought up a good point of discussion related to making Java classes truly immutable by declaring them as final so that they ...