Java Programming Basics Last Updated : 02 Jan, 2025 Comments Improve Suggest changes Like Article Like Report Java is one of the most popular and widely used programming language and platform. A platform is an environment that helps to develop and run programs written in any programming language. Java is fast, reliable and secure. From desktop to web applications, scientific supercomputers to gaming consoles, cell phones to the Internet, Java is used in every nook and corner. However to become proficient in any programming language, one Firstly needs to understand the basics of that language. Therefore, below are the basics of Java in the format in which it will help you the most to get the headstart: Java Environment: The programming environment of Java consists of three components mainly: JDK JRE JVM Learn about setting up the Java environment here: Setting up the environment in Java Java Basic Syntax : Every programming language has its own set of rules to declare, define and work on its components. Reading and learning about all of them together is difficult. Therefore here is a simple task of printing "Hello World" in Java . During this process, major components and their syntaxes are explained clearly. Learn about printing "Hello World" in Java here: Beginning Java programming with Hello World Example Comments in Java : In a program, comments take part in making the program become more human-readable by placing the detail of code involved and proper use of comments makes maintenance easier and finding bugs easily. Comments are ignored by the compiler while compiling the code. Learn about Comments in Java here: Comments in Java Data Types in Java : Each variable in Java has an associated data type. Each data type requires different amounts of memory and has some specific operations which can be performed over it. Learn about different data types in Java here: Data types in Java Variables in Java : A variable is the name given to a memory location. It is the basic unit of storage in a program. Learn about Variables in Java here: Variables in Java Keywords in Java : Keywords or Reserved words are the words in a language that are used for some internal process or represent some predefined actions. These words are therefore not allowed to use as variable names or objects. Doing this will result in a compile-time error. Learn about Keywords in Java here: Keywords in Java Operators in Java : Operators are the foundation of any programming language. Thus the functionality of Java programming language is incomplete without the use of operators. We can define operators as symbols that help us to perform specific mathematical and logical computations on operands. In other words, we can say that an operator operates the operands. Learn about Operators in Java here: Operators in Java Decision Making (Control Statements) in Java : Decision Making in programming is similar to decision making in real life. In programming also we face some situations where we want a certain block of code to be executed when some condition is fulfilled. A programming language uses control statements to control the flow of execution of the program based on certain conditions. These are used to cause the flow of execution to advance and branch based on changes to the state of a program. Learn about Decision Making in Java here: Decision Making in Java Loops in Java : Looping in programming languages is a feature which facilitates the execution of a set of instructions/functions repeatedly while some condition evaluates to true. Java provides three ways for executing the loops. While all the ways provide similar basic functionality, they differ in their syntax and condition checking time. Learn about Loops in Java here: Loops in Java Comment More infoAdvertise with us Next Article Java Methods R RishabhPrabhu Follow Improve Article Tags : Java java-basics Practice Tags : Java Similar Reads Java Tutorial Java is a high-level, object-oriented programming language used to build web apps, mobile applications, and enterprise software systems. It is known for its Write Once, Run Anywhere capability, which means code written in Java can run on any device that supports the Java Virtual Machine (JVM).Java s 10 min read BasicsIntroduction to JavaJava is a high-level, object-oriented programming language developed by Sun Microsystems in 1995. It is platform-independent, which means we can write code once and run it anywhere using the Java Virtual Machine (JVM). Java is mostly used for building desktop applications, web applications, Android 4 min read Java Programming BasicsJava is one of the most popular and widely used programming language and platform. A platform is an environment that helps to develop and run programs written in any programming language. Java is fast, reliable and secure. From desktop to web applications, scientific supercomputers to gaming console 4 min read Java MethodsJava Methods are blocks of code that perform a specific task. A method allows us to reuse code, improving both efficiency and organization. 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