Introduction to Java: Basics, Features, and Example Codes for Beginners to Start Programming Effortlessly
What is Java?
Java is a high-level, object-oriented programming language developed by Sun Microsystems (now owned by Oracle). It is widely used for building applications ranging from mobile apps to enterprise-level systems. Java is known for its platform independence, robustness, and security.
Features of Java
Platform Independence – Write Once, Run Anywhere (WORA) principle allows Java programs to run on any platform with a Java Virtual Machine (JVM).
Object-Oriented – Supports encapsulation, inheritance, and polymorphism.
Robust and Secure – Features like exception handling and bytecode verification enhance security and stability.
Multithreading – Allows concurrent execution of multiple tasks.
Automatic Memory Management – Garbage collection handles memory allocation and deallocation.
Java Basic Syntax
Below is a simple Java program that prints "Hello, World!":
Variables and Data Types in Java
Control Statements in Java
A control statement is a statement that determines the flow of execution in a program. It helps in making decisions, repeating operations, or controlling the program flow using conditions and loops.
If-Else Statement
An if-else statement is a conditional statement that executes a block of code if a specified condition is true; otherwise, it executes an alternative block of code.
A looping statement is used to execute a block of code multiple times based on a condition. Java provides different types of loops, such as for loop, while loop, and do-while loop, to handle repetitive tasks efficiently.
For Loop Example:
While Loop Example:
Functions in Java
A function (or method) in Java is a block of code that performs a specific task and can be executed whenever needed. Functions improve code reusability and modularity.
Conclusion
Java is a powerful and versatile programming language with a rich set of features. Its simplicity and robustness make it an excellent choice for beginners and professionals alike. Start practicing Java today to build a strong programming foundation!
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