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Java Records: Compact Data Carriers, Constructors, Methods and Use Cases
Core idea: A record is a concise declaration for a class whose main purpose is to model data....
Continue ReadingAnnotations in Java: Metadata, Built-In Annotations and Custom Annotations
Metadata: Annotations attach metadata to program elements such as classes, methods, fields, and parameters. Compilers, tools, IDEs, and...
Continue ReadingLambda Expressions in Java: Functional Programming, Syntax and Examples
Core idea: A lambda is an expression that supplies an implementation for a functional interface. It makes small...
Continue ReadingFunctional Interfaces in Java: Predicate, Function, Consumer, Supplier and Custom Interfaces
Behavior as data: Functional interfaces let methods accept behavior as parameters. This supports reusable APIs where the caller...
Continue ReadingJava Syntax: A Complete Guide to Java Programming Syntax
Java syntax is the set of rules that determines how Java source code is written and how the...
Continue ReadingJava Comments: Single-Line, Multi-Line and Documentation Comments
Comments allow developers to explain source code without making those explanations executable. Java defines comments within its lexical...
Continue ReadingJava Variables: Declaration, Initialization, Scope and Types
Variables give Java programs names for values and references. Their type, scope, and mutability affect how programs behave...
Continue ReadingJava Data Types: Primitive and Reference Types Explained
Java data types define what kinds of values variables can represent and what operations are valid. Java separates...
Continue ReadingJava Type Casting: Widening, Narrowing and Reference Casting
Type casting converts a value or changes how a reference is viewed when Java permits the conversion. Widening,...
Continue ReadingJava Operators: Complete Guide to Java Operators and Expressions
Operators perform calculations, comparisons, assignments, logical checks, bit manipulation, and other operations. They are the building blocks of...
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