Java Syntax for Beginners

 Java is one of the most popular and beginner-friendly programming languages in the world. Its clean structure, object-oriented principles, and platform independence make it an excellent choice for those starting their coding journey. Understanding Java syntax is the first step to writing functional programs. In this blog, we’ll break down the basics of Java syntax to help you get started with confidence.

Structure of a Java Program

Every Java program is made up of classes and methods. Here's a simple example:

java

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public class HelloWorld {

    public static void main(String[] args) {

        System.out.println("Hello, world!");

    }

}

public class HelloWorld: Declares a class named HelloWorld.

public static void main(String[] args): The main method where the program begins execution.

System.out.println(): A statement used to print output to the console.

Java is Case-Sensitive

Java differentiates between uppercase and lowercase letters. So, System and system are considered different identifiers. Always be careful with naming conventions and letter cases.

Variables and Data Types

In Java, you must declare a variable with a specific data type:

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int age = 25;           // Integer type

double price = 99.99;   // Floating-point type

char grade = 'A';       // Character type

boolean isJavaFun = true; // Boolean type

Operators

Java uses a variety of operators for performing operations:

Arithmetic: +, -, *, /, %

Comparison: ==, !=, >, <, >=, <=

Logical: &&, ||, !

Example:

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int a = 10, b = 20;

System.out.println(a + b); // Output: 30

Control Structures

Java provides if-else, switch, for, while, and do-while to control the flow of the program.

Example:

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if (age > 18) {

    System.out.println("Adult");

} else {

    System.out.println("Minor");

}

Comments

Comments help you explain code:

Single-line: // This is a comment

Multi-line:

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/* This is

   a multi-line comment */

Final Thoughts

Learning Java syntax is like learning the grammar of a new language. Once you grasp these basic rules — classes, variables, methods, and control structures — you're well on your way to building your first Java applications. Start small, practice regularly, and you’ll find that Java becomes an easy and powerful tool in your programming journey.

Learn Fullstack Java Training Course

Read More:

What Makes Java Ideal for Enterprise Applications?

Understanding Java Virtual Machine (JVM)

Setting Up Your Java Development Environment

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