ArrayList in Java
Arrays have a fixed size. Once you create an array of 10 elements, it stays at 10. If you need […]
Tutorials
Step-by-step Java programming tutorials for beginners. Learn Java fundamentals, object-oriented programming, and practical coding skills with working examples.
Java Arrays Explained
A single variable holds one value. But programs often work with collections: a list of names, a series of test
Java Methods – Writing Reusable Code
As programs grow, putting all code in main becomes unmanageable. Methods let you break code into named, reusable pieces. Instead
Getting User Input with Scanner
Programs that only work with hardcoded values aren’t very useful. Real programs respond to users. They ask questions, accept answers,
Java Loops – for, while, do-while
Loops repeat code. Print a message ten times. Process every item in a list. Keep asking for input until the
Java Conditionals – if, else, switch
Programs need to make decisions. Should the user see an error message? Did they enter the correct password? Is the
Working with Strings in Java
Strings hold text. Names, messages, file paths, user input, JSON data. Almost every program works with strings constantly. Java provides
Java Operators Explained
Variables store data. Operators do things with it. They add numbers, compare values, combine conditions, and assign results. Java has
Java Variables and Data Types
Variables store data that your program can use and change. Every useful program needs them. A game tracks your score
Your First Java Program – Hello World
Every programmer’s first program prints “Hello, World!” to the screen. It’s a tradition that dates back to a 1978 book
Best Free Resources to Learn Java in 2025
You don’t need to spend money to learn Java. Some of the best learning materials are completely free, created by
10 Java Interview Questions Every Entry-Level Developer Should Know
Your first Java developer interview can feel intimidating. Interviewers ask about concepts you may have learned months ago, and the