Which was the first purely object oriented programming language developed?JavaC++SmallTalkKotlin

Breakdown of the Problem

1. Identify the programming languages listed: Java, C++, SmallTalk, Kotlin.
2. Determine which one was the first object-oriented programming language.

Relevant Concepts

1. Object-Oriented Programming (OOP): A paradigm based on the concept of "objects", which can contain data and methods.
2. History of Programming Languages: Understanding the timeline of development for the languages in question.

Analysis and Detail

1. SmallTalk: Developed in the early 1970s, it is widely recognized as one of the first programming languages to fully implement the principles of object-oriented programming.
2. C++: Developed in the early 1980s, C++ extended the capabilities of C by adding object-oriented features.
3. Java: Introduced in the mid-1990s, Java aimed to provide a platform-independent object-oriented environment.
4. Kotlin: Developed in 2011, it is a modern language that runs on the Java Virtual Machine (JVM) and supports object-oriented programming but is not the first.

Verify and Summarize

Based on the historical timeline and definitions, SmallTalk is indeed the pioneering programming language that established the groundwork for object-oriented paradigms.

Final Answer

SmallTalk was the first purely object-oriented programming language developed.