? Java Keywords

? Quick Overview

Java keywords are reserved words that have a predefined meaning in the Java language. These words cannot be used as variable names, class names, or identifiers because they are part of Java’s syntax and core functionality.

? Key Concepts

• Keywords define the structure of Java programs
• They are always written in lowercase
• Each keyword has a specific purpose
• Java has around 50+ reserved keywords

? Syntax / Theory

Keywords are used to declare data types, control program flow, handle exceptions, define classes, and manage access control.

• class – used to declare a class
• public, private, protected – access modifiers
• static – belongs to class rather than object
• if, else, switch – decision making
• for, while – looping

? Code Example

// Example showing usage of Java keywords
public class KeywordDemo {
    public static void main(String[] args) {
        int number = 10;
        if (number > 5) {
            System.out.println("Number is greater than 5");
        }
    }
}