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How To Code in Java
By Toli and toli
How To Code in Java


Java is a mature and well-designed programming language with a wide range of uses. One of its unique benefits is that it is cross-platform: once you create a Java program, you can run it on many operating systems, including servers (Linux/Unix), desktop (Windows, macOS, Linux), and mobile operating systems (Android, iOS).

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How To Write Your First Program in Java

Published on September 16, 2022

In this tutorial, you’ll create a simple “Hello, World!” program in Java. The “Hello, World!” program is a simple and complete first program for beginners, and it’s a good way to make sure your environment is properly configured. By creating a “Hello, World” program, you’ll start learning Java’s basic syntax as well as the compilation and execution process of a Java program. Once you’re finished, you’ll be able to write and run basic Java code.

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Understanding Data Types in Java

Published on September 29, 2022

Java is a statically typed programming language. This means that when you create a variable, you must also specify its data type, which is the type of information it stores. Java has two data types: primitive and reference (also known as non-primitive). In this tutorial, you will use variables to store and use information in a Java program to learn about some of the commonly used data types in Java.

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How To Use Operators in Java

Published on October 25, 2022

An operator is one or more symbols in combination — from the well-known arithmetic operators such as minus and plus to the more advanced instanceof. When you apply operators on values or variables, you get a result from the operation. In this tutorial, you will use unary, binary, and ternary operators in a range of scenarios.

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How To Write Conditional Statements in Java

Published on November 29, 2022

Conditionals statements change the program flow. Conditional statements are also called branching statements because when a condition is matched, the flow goes one way into one branch of the code. If a condition is not met, another condition is evaluated, if there is one, and so on. In this tutorial, you will write conditional statements in Java and learn about each type’s use cases, benefits, and drawbacks.

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How To Use Loops in Java

Published on January 11, 2023

Writing repetitive tasks is common in programming. Loops are structures for controlling repetitive program flow. Depending on their syntax and logic, there are two main types of loops: while and for loops. In this tutorial, you will use both types to create repetitive tasks and learn about the benefits and drawbacks of each one.

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How To Use Arrays in Java

Published on April 25, 2023

Learn how to work with arrays in Java. In this tutorial, you’ll use a char array to store a password securely while learning the intricacies of arrays in Java.

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How To Use Lists in Java

Published on January 19, 2024

Learn about Java’s java.util.List interface! Discover how it allows you to group and store multiple elements in a collection, and its advanced options for storing and retrieving values.

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How To Use Maps in Java

Published on January 19, 2024
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How to Use Lambdas in Java

Published on February 28, 2024

In this tutorial, you will learn to write your lambda expressions. You will also learn to use some built-in Lambdas available in the java.util.function package.

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