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  1. Generics in Java - GeeksforGeeks

    Nov 22, 2025 · Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, …

  2. Java Strings - GeeksforGeeks

    Jan 13, 2026 · Syntax: StringTokenizer st = new StringTokenizer ("Java String Example"); Immutable String in Java In Java, string objects are immutable. Immutable simply means unmodifiable or …

  3. Abstract Class in Java - GeeksforGeeks

    Jan 20, 2026 · In Java, just like in C++ an instance of an abstract class cannot be created, we can have references to abstract class type though. It is as shown below via the clean Java program.

  4. Stream In Java - GeeksforGeeks

    Jan 20, 2026 · Java Stream Creation is one of the most basic steps before considering the functionalities of the Java Stream. Below is the syntax given for declaring a Java Stream.

  5. Map Interface in Java - GeeksforGeeks

    Jan 7, 2026 · In Java, the Map Interface is part of the java.util package and represents a collection of key-value pairs, where Keys should be unique, but values can be duplicated. It provides efficient …

  6. Java Variables: Types & Declaration

    Day 13-------learning Java 🚀 📘 Today's Learning: Java Variables Today I revised the concept of variables in Java, and here's a simple breakdown of what I learned 👇 🔷 What is Variable ...

  7. Scanner Class in Java - GeeksforGeeks

    Jul 23, 2025 · hasNextInt (): This method is used to check if the token is an integer. hasNextLine (): This method is used to check if there is an input in next line. useDelimiter (): This method changes the …