Java Advanced Sorting In Java Advanced Sorting objects requires defining how objects should be compared.Java provides Comparable and Comparator interfaces for custom sorting logic. 1. Comparable Interface Comparable defines a natural order for objects. Package:...
⚡ Java Lambda Expressions Lambda expressions in Java provide a concise way to represent an anonymous function (a function without a name).Introduced in Java 8, they simplify functional programming and reduce boilerplate code. Often...
🧵 Java Threads A thread is a lightweight subprocess and the smallest unit of execution in Java.Java allows multithreading, i.e., executing multiple threads concurrently. Package: java.lang Threading helps in parallel execution, responsive programs, and...
Java Regular Expressions (Regex) Regular Expressions (Regex) are patterns used to match character combinations in strings.In Java, regex is supported via the java.util.regex package. Main classes: Pattern and Matcher Used for validation, search, and...
🏷️ Java Annotations Annotations in Java are metadata that provide information about the code to the compiler or runtime environment. Do not change program semantics directly Help in compile-time checking, documentation, and runtime processing...
📦 Java Generics Generics in Java allow you to write classes, interfaces, and methods that can operate on any type of objects while providing compile-time type safety. Introduced in Java 5 Helps avoid ClassCastException...
📦 Java Wrapper Classes Wrapper Classes in Java are object representations of primitive data types. They allow primitive types (int, double, etc.) to be used as objects. Package: java.lang Used in Collections, Generics, and...
📝 Java BufferedWriter BufferedWriter is a character output stream used to write text to a file efficiently.It buffers characters to reduce the number of write operations, improving performance, especially for large files. Package: java.io...
📖 Java BufferedReader BufferedReader is a character input stream that reads text from a character-input stream efficiently.It buffers characters to provide efficient reading of characters, arrays, and lines. Package: java.io Superclass: Reader Often used...
📂 Java FileOutputStream FileOutputStream is a byte stream class used to write raw byte data to a file.It is mainly used for binary files like images, videos, or any non-text files, but can also...