54 Tutorials · DE / EN

Tutorials · Small

Start with no prior knowledge. Small examples explain the language. Medium guides connect building blocks. Large tutorials walk through complete project workflows.

Flutter / Dart

Small

01 · Flutter / Dart

Install Dart and run your first program

Create a text file containing Dart code and run it on your computer.

Small
Basics
15 min

02 · Flutter / Dart

Variables, data types and missing values

Store values under names and distinguish text, numbers and booleans.

Small
Basics
15 min

03 · Flutter / Dart

Operators and decisions with if

Compare values and execute instructions only when a condition matches.

Small
Basics
15 min

04 · Flutter / Dart

Loops: repeat work

Process several values and stop repetition in a controlled way.

Small
Basics
15 min

05 · Flutter / Dart

Functions, parameters and return values

Encapsulate a calculation in a reusable function.

Small
Basics
15 min

06 · Flutter / Dart

Lists, sets and maps

Choose a suitable collection for ordered items, unique values or lookups.

Small
Basics
15 min

07 · Flutter / Dart

Classes and constructors

Group related values into your own data type.

Small
Basics
15 min

08 · Flutter / Dart

Null safety, errors and Future

Handle missing values and wait for an asynchronous result.

Small
Basics
15 min

09 · Flutter / Dart

Your first Flutter interface

Build a screen from widgets and update it with a button.

Small
Basics
15 min

React / TypeScript

Small

01 · React / TypeScript

JavaScript: your first program

Run a JavaScript file and understand the difference between a browser and Node.js.

Small
Basics
15 min

02 · React / TypeScript

Variables and data types in JavaScript

Use const and let and identify text, numbers, booleans and missing values.

Small
Basics
15 min

03 · React / TypeScript

Operators, comparisons and if

Choose between workflows based on a condition.

Small
Basics
15 min

04 · React / TypeScript

Loops in JavaScript

Iterate over values and calculate a total.

Small
Basics
15 min

05 · React / TypeScript

Functions and scope

Write reusable calculations and understand local variables.

Small
Basics
15 min

06 · React / TypeScript

Arrays, objects and new values

Describe records and create changes without overwriting the old value.

Small
Basics
15 min

07 · React / TypeScript

HTML and CSS: the foundation of a web interface

Open a simple web page and separate content from styling.

Small
Basics
15 min

08 · React / TypeScript

TypeScript types and modules

Describe allowed data shapes and check them before execution.

Small
Basics
15 min

09 · React / TypeScript

Promises, async/await and errors

Wait for eventual results and handle failed tasks.

Small
Basics
15 min

Java

Small

01 · Java

Install Java and run the first program

Compile a Java file and run the resulting program.

Small
Basics
15 min

02 · Java

Variables and data types in Java

Distinguish primitive values, text and missing references.

Small
Basics
15 min

03 · Java

Operators and conditions

Check numbers and text using appropriate comparisons.

Small
Basics
15 min

04 · Java

Loops and controlled repetition

Process a sequence of values using one shared rule.

Small
Basics
15 min

05 · Java

Methods, parameters and results

Separate a calculation from its output.

Small
Basics
15 min

06 · Java

Arrays, lists, sets and maps

Choose a collection for ordering, uniqueness or lookup.

Small
Basics
15 min

07 · Java

Classes and constructors

Create a custom data type with controlled initial values.

Small
Basics
15 min

08 · Java

Interfaces and composition

Define a contract and replace its implementation.

Small
Basics
15 min

09 · Java

Exceptions and safe file access

Handle a failure and close a file even when work stops.

Small
Basics
15 min