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

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.

Aug 17th 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.

Aug 17th 2026
5-12 Weeks
Learn HTML and CSS (Coursera) Coursera
Scrimba

Learn HTML and CSS (Coursera)

This course is perfect if you want to learn how to code websites from scratch. You will learn the basics of HTML and CSS through interactive challenges. Along the way, you will build multiple projects, like a Google.com clone, a Space Exploration page, and a fun birthday site filled with GIFs. While most of the challenges are done in Scrimba's interactive editor, you will also learn how to use professional tools like VS Code for code editing, GitHub for hosting your code, and Netlify for deploying your projects to the world wide web.

Aug 17th 2026
5-12 Weeks
Programming Languages, Part A (Coursera) Coursera
University of Washington

Programming Languages, Part A (Coursera)

This course is an introduction to the basic concepts of programming languages, with a strong emphasis on functional programming. The course uses the languages ML, Racket, and Ruby as vehicles for teaching the concepts, but the real intent is to teach enough about how any language “fits together” to make you more effective programming in any language -- and in learning new ones.

Aug 10th 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.

Aug 17th 2026
5-12 Weeks
Introduction to Software, Programming, and Databases (Coursera) Coursera
IBM

Introduction to Software, Programming, and Databases (Coursera)

There are many types of software and understanding software can be overwhelming. This course aims to help you understand more about the types of software and how to manage software from an information technology (IT) perspective. This course will help you understand the basics of software, cloud computing, web browsers, development and concepts of software, programming languages, and database basics.

Aug 17th 2026
5-12 Weeks
Introduction to TCP/IP (Coursera) Coursera
Yonsei University

Introduction to TCP/IP (Coursera)

You use the Internet through your PC (Personal Computer), laptop, tablet, smartpad, and smartphone every day in everything you do. Through your own PC/laptop, you can easily learn everything about the Internet, and that is what this course is focused on. In this course ‘Introduction to TCP/IP,’ you will learn the operational functions of Internet technologies (which include IPv4, IPv6, TCP, UDP, addressing, routing, domain names, etc.) and your PC/laptop's security and gateway Internet setup and basic principles.

Aug 17th 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).

Aug 17th 2026
4 Weeks
Image and video processing: From Mars to Hollywood with a stop at the hospital (Coursera) Coursera
Duke University

Image and video processing: From Mars to Hollywood with a stop at the hospital (Coursera)

In this course, you will learn the science behind how digital images and video are made, altered, stored, and used. We will look at the vast world of digital imaging, from how computers and digital cameras form images to how digital special effects are used in Hollywood movies to how the Mars Rover was able to send photographs across millions of miles of space.

Aug 10th 2026
5-12 Weeks