Which programming language is described as object-oriented, class-based, and interpreted?

The programming language that is object-oriented, class-based, and interpreted is Java.

Java is designed around the concept of objects, which allows for data abstraction and encapsulation through classes. This organization enables developers to create modular, reusable code, which is a hallmark of object-oriented programming. Java's class-based structure means that everything in Java is part of a class, and it supports inheritance, polymorphism, and encapsulation.

Additionally, Java is interpreted, meaning that it is typically run on a Java Virtual Machine (JVM). This allows the same Java program to be executed on different platforms without modification, as the JVM interprets the bytecode generated from the Java source code into machine code specific to the operating system and hardware. This cross-platform capability is one of Java's core strengths.

While C++ is also object-oriented and class-based, it is primarily compiled rather than interpreted. Python and JavaScript are interpreted languages and also support object-oriented programming, but Java is uniquely class-based among these options, with a strong emphasis on strict object-oriented practices. This distinction reinforces why Java fits the description provided in the question.