2) Java Tokens Explained (Keywords, Identifiers, Literals, Operators) | Java Full Stack Course

👋 Welcome back to the Java Full Stack Development Course!

In this lesson, we explore the essential building blocks of any Java program: **Tokens**. Tokens are the smallest individual units in a program, and understanding them is crucial for writing clean, correct code.

A Java program is a collection of tokens, comments, and white space.

🔑 **What is covered in this video?**
We break down the 5 main types of Java tokens:

1. **Reserved Keywords:** Words with a predefined meaning (like `if`, `while`, `int`). We review the full list of Java's 50 keywords.
2. **Identifiers:** Names given to variables, functions, and other elements. Learn the rules for creating valid identifiers (case-sensitive, must start with a letter or underscore, cannot use special characters).
3. **Literals:** Data values written directly into the code (e.g., `10`, `1.2`, `true`, `'A'`). We cover Integer, Floating-Point, Boolean, and Character literals.
4. **Operators:** Symbols used to perform operations on operands (e.g., `+`, `-`, `==`, `&&`). We look at unary, arithmetic, relational, bitwise, logical, and assignment operators.
5. **Separators:** Used to separate the given code (e.g., braces `{}`, parentheses `()`, semicolon `;`).

Plus, we look at the importance and types of **Comments** (Single-line and Block/Multi-line comments) for program clarity.

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Видео 2) Java Tokens Explained (Keywords, Identifiers, Literals, Operators) | Java Full Stack Course канала Rohini Devani