Java Tutorial Roadmap
Learn Java programming with this complete Java tutorial roadmap. Covers Java basics, OOP concepts, JVM, memory management, multithreading, exception handling, file handling, and advanced Java topics.
Overview of Java
Introduction to Java Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is intended to let application
Basic Concepts of Java
Java Basic Syntax Java is an object-oriented programming language, which means that it consists of objects that interact with each other through method calls to perform various tasks. Here’s an overvi
Input/Output in Java
How to Take Input from User in Java Java provides multiple ways to take input from users through its I/O (Input/Output) package. These streams facilitate the reading of characters, data types, and obj
Flow Control in java
Decision Making in Java (if, if-else, switch, break, continue, jump). Decision-making in programming is like making decisions in real life. When coding, we often need to execute certain blocks of code
Operators in Java
Operators Operators are the foundation of any programming language, enabling us to perform various computations, logic evaluations, and functions. Java offers several types of operators that are categ
Arrays
Arrays in Java Operators are the foundation of any programming language, enabling us to perform various computations, logic evaluations, and functions. Java offers several types of operators that are
OOPS in Java
Object Oriented Programming (OOPs) Concept in Java Object-Oriented Programming (OOP) in Java refers to a programming approach where objects are used to represent and execute the code’s functionality.
Inheritance
Inheritance and Constructors In Java, constructors are used to initialize the attributes of an object, making the language more reflective of real-world scenarios. By default, Java provides a no-argum
Abstraction keyword
Abstraction In Java, the abstract keyword is a non-access modifier applied to classes and methods, but not variables. It is primarily used to achieve abstraction, one of the core principles
Encapsulation
Encapsulation in C++ Abstraction and Encapsulation in Object-Oriented Programming (OOP) Abstraction and Encapsulation are key principles in Object-Oriented Programming (OOP). They are fundamental to b
Polymorphism
Difference between Inheritance and Polymorphism Inheritance: Inheritance is a feature in object-oriented programming where a new class (called derived or child class) is created by inheriting properti
Methods
Java Instance Methods Instance methods are methods that are called on an instance (object) of the class they belong to. To invoke an instance method, you first need to create an object of the class. E
Memory Allocation
Java Memory Management Java handles memory management automatically, with the help of the Java Virtual Machine (JVM) and the Garbage Collector. But it’s essential for a programmer to understand how me
Wrapper Classes
Wrapper Classes in Java The first question that typically comes to mind is, “When we already have primitive data types, why do we need wrapper classes in Java?” The reason lies in the additional funct
Keyword
Java Keywords In Java, keywords or reserved words are predefined terms that are used by the language for specific internal processes or actions. As such, these keywords cannot be used as variable name
Access Modifiers
Public vs Protected vs Package vs Private Access Modifier in Java Access Modifiers in Java In Java, access modifiers are used to control the visibility and accessibility of classes, methods, and varia
Classes in Java
Understanding Classes and Objects Object-Oriented Programming (OOP) refers to the concept of structuring software as a collection of objects that include both data and behavior. In this approach, prog
Packages in Java
What is a Package? A package in Java is a namespace that groups related classes, interfaces, subpackages, enums, and annotations. Packages help organize large projects and provide modularity. Why Use
Exception
Exception in java Exception Handling in Java is one of the effective means to manage runtime errors and preserve the regular flow of the application. Java’s mechanism for handling runtime errors
Multithreading in Java
Introduction Multithreading is a key feature in Java that enables the concurrent execution of multiple parts of a program, maximizing CPU utilization. Each independent path of execution is called a th
Synchronization
Synchronization in Java In multithreaded applications, there are instances where multiple threads attempt to access shared resources simultaneously, which can lead to inconsistencies and unexpected re
File Handling
Java.io.File Class in Java Java’s File class represents the pathname of a file or directory. Since file systems vary across platforms, using a simple string is not enough to handle file or d