CommonDocs.org
Coding

Intro to Java Series

Start learning how to program in Java today with this introductory series, structured similarly to a Computer Science I course.

A 17-part series

In this series

17 guides
  1. 1Chapter 1: Introduction to JavaWelcome to the first chapter of this introductory programming series. In this chapter, you will learn the basics of how programming languages make computers…Jun 21, 2024
  2. 2Chapter 2: Hello, World.This chapter will introduce you to the IntelliJ IDE. We will explore the basics of building a program called Hello World, which simply prints the message…Jun 21, 2024
  3. 3Chapter 3: Variables, Scanners & StringsThis chapter will explain what variables are and how they are used. You will learn about different types of variables (primitive data types), strings, and how…Jun 24, 2024
  4. 4Chapter 4: Decision Making with Control StatementsComputers can do much more than take input and return a simple set of formatted output (like a basic calculator). They can actually decide and perform actions…Jun 25, 2024
  5. 5Chapter 5: BigDecimals, Mutability & Basic Memory ConceptsIn this chapter, we will study BigDecimals and learn about how the JVM handles them in system memory. The BigDecimal class is used to perform calculations when…Jun 26, 2024
  6. 6Chapter 6: Custom MethodsSo far in this series, all of our code has gone in the main method. A method is a block of code that gets executed when it's called and is associated with a…Jun 26, 2024
  7. 7Chapter 7: LoopsBeing able to do the same tasks or computations repeatedly is one of the most useful things we can do with computers. Loops are blocks of code that can be…Jun 26, 2024
  8. 8Chapter 8: RecursionThis chapter discusses recursion, or recursive loops. Recursive loops are a loop structure in which a method invokes itself until a certain condition is met…Jun 26, 2024
  9. 9Chapter 9: ArraysIn this chapter, we'll be examining arrays. An array is a collection of objects or variables of the same type. Each object or variable in an array is an…Jun 26, 2024
  10. 10Chapter 10: ArrayListsIn the last chapter, you learned about arrays. One of the biggest limitations of arrays is their fixed size. A work around was discussed for expanding arrays…Jun 26, 2024
  11. 11Chapter 11: Multidimensional ArraysA two-dimensional array is a data structure with two dimensions. You can think of it as a table with rows and columns. Keep in mind that data structures are…Jun 26, 2024
  12. 12Chapter 12: Advanced String ConceptsStrings have been used throughout this series. By now, you should understand that strings hold a series of characters. In this chapter, you will learn more…Jun 26, 2024
  13. 13Chapter 13: Exception Handling - Preventing ErrorsIn this chapter, you will learn ways to prevent users from unintentionally crashing your programs. The focus will be on try/catch blocks and using specific…Jun 27, 2024
  14. 14Chapter 14: Basic File Input/OutputIn this chapter, you will learn how to use Java to interact with the computer's file system. We will use Java to read and save text files on the user's…Jun 27, 2024
  15. 15Chapter 15: Object Oriented Design - Classes & ConstructorsWelcome to the first chapter on OOP! This is the first of several chapters on this subject. To begin, we will examine basic object-oriented design principles…Jun 28, 2024
  16. 16Chapter 16: Java's Main MethodIn this chapter, we will explore what each keyword in the main method actually means as it relates to object-oriented programming and the scope of the method…Jun 28, 2024
  17. 17Chapter 17: Class Inheritance (OOP)When used properly, inheritance allows us to extend the properties or methods of a class to its subclasses. It's like how a child inherits traits from their…Jun 28, 2024