Why would anyone learn Java in 2026?

Summary

The speaker explains why Java remains useful in 2026 and why it can be a good first programming language. Its longevity, portability, and role in dependable large-scale systems are presented as key strengths.

Why Java remains relevant

• “Write once, run anywhere”: Java code is compiled into bytecode that runs on a compatible Java Virtual Machine (JVM). This allows the same program to run across operating systems and devices without a separate version for each one.
• Longstanding ecosystem: The speaker points to tools and games such as IntelliJ IDEA, Minecraft, and RuneScape as examples of products built with or heavily using Java.
• Use in critical systems: Java is commonly used for back-end services, banking and payment systems, APIs, cloud applications, microservices, and large-scale infrastructure. Its stability, scalability, and reliability are among the reasons organizations continue to depend on it.
• Continued development: Modern Java offers cleaner ways to write code and newer features while remaining widely used for back-end systems.

How Java models software

The speaker describes object-oriented programming as a way to think about software in terms of objects, such as a person, tree, ATM, or game character. An object combines:

• Data, represented by fields or variables—for example, a person’s name or age, or a game player’s health and inventory.
• Behavior, represented by methods—for example, actions a player can perform, such as moving or attacking.

Java classes define the fields and methods associated with objects. The speaker recommends controlling access to fields rather than exposing them indiscriminately. Fields can be declared private, protected, or public, while public methods such as getters and setters can regulate how data is read or changed.

The four pillars of object-oriented programming

• Encapsulation: Protect an object’s internal data and implementation, allowing interaction through controlled methods. The speaker compares this to taking a prescribed pill without needing to understand its internal chemistry.
• Inheritance: A child class can inherit fields and methods from a parent class, then customize them. The speaker compares this to inheriting traits from family members.
• Abstraction: Provide a simple way to use something while hiding its complex internal workings. Driving a car illustrates this: the driver uses the steering wheel and pedals without directly managing the engine or transmission.
• Polymorphism: The same request or method call can produce different behavior depending on the object handling it. For example, a request to book an appointment might be handled by a flight service, mechanic, or doctor’s office, each with its own implementation.

Suggested next step

The speaker encourages people interested in programming to learn Java fundamentals and then practise by building applications. They mention coding challenges at midnightcoder.dev/challenges and recommend opening an IDE—IntelliJ is the speaker’s preference—to begin.

Speaker and sources

• Glada, the channel host, says they have worked with Java for more than 20 years.
• No other speakers or external sources are identified in the subtitles.