Java Basic Structures: Arrays, Strings, and Files (Coursera)

Offered by Codio,
Java Basic Structures: Arrays, Strings, and Files (Coursera)

Code and run your first Java program in minutes without installing anything! This course is designed for learners with limited coding experience, providing a solid foundation of not just Java, but core Computer Science topics that can be transferred to other languages. The modules in this course cover arrays, strings, and files. Completion of Java Basics: Selection and Iteration before taking this course is recommended.

Class Deals by MOOC List - Click here and see Coursera's Active Discounts, Deals, and Promo Codes.

To allow for a truly hands-on, self-paced learning experience, this course is video-free. Assignments contain short explanations with images and runnable code examples with suggested edits to explore code examples further, building a deeper understanding by doing. You'll benefit from instant feedback from a variety of assessment items along the way, gently progressing from quick understanding checks (multiple choice, fill in the blank, and un-scrambling code blocks) to small, approachable coding exercises that take minutes instead of hours.

What You Will Learn

  • Store and manipulate arrays of data
  • Compare and manipulate strings of text
  • Read and write to text and CSV files

Course 2 of 4 in the Programming in Java: A Hands-on Introduction Specialization

Syllabus

WEEK 1
Arrays
Use arrays to store multiple pieces of data in a single variable. Iterate over arrays or use built-in methods and functions to manipulate arrays.

WEEK 2
Strings
Store multiple characters or text in a string. Use built-in methods and functions to manipulate strings.

WEEK 3
Files
Import and export large pieces of data from text and CSV files.

Go to Class
MOOC List is learner-supported. When you buy through links on our site, we may earn an affiliate commission.

Related Courses

Problem Solving Using Computational Thinking (Coursera) Coursera
University of Michigan

Problem Solving Using Computational Thinking (Coursera)

Have you ever heard that computers "think"? Believe it or not, computers really do not think. Instead, they do exactly what we tell them to do. Programming is, "telling the computer what to do and how to do it." Before you can think about programming a computer, you need to work out exactly what it is you want to tell the computer to do. Thinking through problems this way is Computational Thinking. Computational Thinking allows us to take complex problems, understand what the problem is, and develop solutions. We can present these solutions in a way that both computers and people can understand.

Nov 9th 2026
5-12 Weeks
Programming and Application Foundations (Coursera) Coursera
Illinois Tech

Programming and Application Foundations (Coursera)

This course introduces the students to the creation and deployment of modern, standards-compliant web pages written in HTML, CSS, and JavaScript in the context of the client-server architecture of the web. The course also covers the fundamentals of programming in a modern programming language, basic data modeling, database design, implementation, and administration of single-user and shared multi-user database applications using a contemporary relational database management system.

Nov 9th 2026
5-12 Weeks
Build a Modern Computer from First Principles: Nand to Tetris Part II (project-centered course) (Coursera) Coursera
Hebrew University of Jerusalem

Build a Modern Computer from First Principles: Nand to Tetris Part II (project-centered course) (Coursera)

In this project-centered course you will build a modern software hierarchy, designed to enable the translation and execution of object-based, high-level languages on a bare-bone computer hardware platform. In particular, you will implement a virtual machine and a compiler for a simple, Java-like programming language, and you will develop a basic operating system that closes gaps between the high-level language and the underlying hardware platform.

Nov 9th 2026
5-12 Weeks
Principles of Computing (Part 2) (Coursera) Coursera
Rice University

Principles of Computing (Part 2) (Coursera)

This two-part course introduces the basic mathematical and programming principles that underlie much of Computer Science. Understanding these principles is crucial to the process of creating efficient and well-structured solutions for computational problems. To get hands-on experience working with these concepts, we will use the Python programming language. The main focus of the class will be weekly mini-projects that build upon the mathematical and programming principles that are taught in the class.

Nov 2nd 2026
4 Weeks
Creative Programming for Digital Media & Mobile Apps (Coursera) Coursera
University of London,Goldsmiths, University of London

Creative Programming for Digital Media & Mobile Apps (Coursera)

This course is for anyone who would like to apply their technical skills to creative work ranging from video games to art installations to interactive music, and also for artists who would like to use programming in their artistic practice. This course will teach you how to develop and apply programming skills to creative work. This is an important skill within the development of creative mobile applications, digital music and video games. It will teach the technical skills needed to write software that make use of images, audio and graphics, and will concentrate on the application of these skills to creative projects. Additional resources will be provided for students with no programming background.

Nov 9th 2026
5-12 Weeks
Applied Text Mining in Python (Coursera) Coursera
University of Michigan

Applied Text Mining in Python (Coursera)

This course will introduce the learner to text mining and text manipulation basics. The course begins with an understanding of how text is handled by python, the structure of text both to the machine and to humans, and an overview of the nltk framework for manipulating text. The second week focuses on common manipulation needs, including regular expressions (searching for text), cleaning text, and preparing text for use by machine learning processes. The third week will apply basic natural language processing methods to text, and demonstrate how text classification is accomplished. The final week will explore more advanced methods for detecting the topics in documents and grouping them by similarity (topic modelling).

Nov 9th 2026
4 Weeks
Kotlin for Java Developers (Coursera) Coursera
JetBrains

Kotlin for Java Developers (Coursera)

The Kotlin programming language is a modern language that gives you more power for your everyday tasks. Kotlin is concise, safe, pragmatic, and focused on interoperability with Java code. It can be used almost everywhere Java is used today: for server-side development, Android apps, and much more. This course aims to share with you the power and the beauty of Kotlin.

Nov 9th 2026
5-12 Weeks
Uso de bases de datos con Python (Coursera) Coursera
University of Michigan

Uso de bases de datos con Python (Coursera)

Este curso presentará a los estudiantes los conceptos básicos del lenguaje de consulta estructurado (Structured Query Language, SQL), así como el diseño básico de bases de datos para almacenar datos como parte de una iniciativa de varios pasos para recopilar, analizar y procesar datos. El curso utilizará SQLite3 como base de datos. También crearemos rastreadores web y procesos de visualización y recopilación de datos de varios pasos. Utilizaremos la biblioteca D3.js para realizar la visualización básica de datos.

Nov 9th 2026
5-12 Weeks
Introduction to Open Source Application Development (Coursera) Coursera
Illinois Tech

Introduction to Open Source Application Development (Coursera)

This course introduces basic concepts of systems programming using a modern open source language. You will learn to apply basic programming concepts toward solving problems, writing pseudocode, working with and effectively using basic data types, abstract data types, control structures, code modularization and arrays. You will learn to detect errors, work with variables and loops, and discover how functions, methods, and operators work with different data types. You will also be introduced to the object paradigm including classes, inheritance, and polymorphism.

Nov 9th 2026
5-12 Weeks