zdisanto / java

Brushing up on my Java in Codecademy, this is what I am working on so far.

Java

Re-learning Java in Codecademy, this is what I am working on so far.

Important

• To compile and execute a file you must enter commands in the terminal
  • To compile file type: javac [fileName].java
    • If no error, compiler executes without any feedback
    • If error, compiler may print:
      • compiling.java:4: error: ';' expected System.out.println("Java is a class-based language.") ^1 error
  • To "list" the availabe file(s) type: ls
    • If you type ls before compiling, output may look like:
      • Compiling.java
    • If you type ls after compiling, output may look like:
      • Compiling.class Compiling.java <-- Hey look, a class file!
  • Dont run javac [fileName].class in the terminal or the output may look like:
    • javac: invalid flag: Compiling.class Usage: javac <options> <source files> use --help for a list of possible options
  • Run java Compiling to display the output in the terminal!

Codecademy Syllabus:

• Chapter 1: Hello World
  • Lesson 1: Hello World
    • Introduction to Java
    • Hello Java File! HelloYou
    • Print Statements HideAndSeek
    • Commenting Code Timeline
    • Semicolons and Whitespace LanguageFacts
    • Compilation: Catching Errors
    • Compilation: Creating Executables
    • Java Review: Putting it All Together Review
  • Lesson 2: Java Program Structure
  • Lesson 3: Hello World
  • Lesson 4: Planting a Tree
  • Lesson 5: What is an IDE?
• Chapter 2: Variables
  • Lesson 1: Lean Java: Variables
    • Introduction Creator
    • ints CountComments
    • doubles MarketShare
    • booleans Booleans
    • char Char
    • String Song
    • Static Checking Mess
    • Naming
    • Review
  • Lesson 2: Java Variables Quiz
  • Lesson 3: Java Variables: Mad Libs
  • Lesson 4: Lean Java: Manipulating Variables
  • Lesson 5: Java Variable Manipulation Quiz
  • Lesson 6: Math Magic
• Chapter 3: Object-Oriented Java
  • Lesson 1: Classes and Objects
  • Lesson 2: Java: Introduction to Classes
  • Lesson 3: Intro to Java Classes
  • Lesson 4: Learn Java: Methods
  • Lesson 5: Java Methods Quiz
  • Lesson 6: A Basic Calculator
  • Lesson 7: Build a Droid
• Chapter 4: Conditionals and Control Flow
  • Lesson 1: Conditionals and Control Flow
  • Lesson 2: Conditional Operators
  • Lesson 3: Conditionals and Control Flow
  • Lesson 4: A Simple Car Loan Payment Calculator
  • Lesson 5: Continents and Cities
• Chapter 5: Arrays and ArrayLists
  • Lesson 1: Learn Java: Arrays
  • Lesson 2: Java Arrays Quiz
  • Lesson 3: Learn Java: ArrayLists
  • Lesson 4: Java ArrayList Quiz
  • Lesson 5: Desert Island Playlist
• Chapter 6: Loops
  • Lesson 1: Learn Java: Loops
  • Lesson 2: Learn Java: Loops Quiz
  • Lesson 3: Fizz Buzz
  • Lesson 4: The Prime Directive
• Chapter 7: String Methods
  • Lesson 1: String Methods
  • Lesson 2: String Methods
  • Lesson 3: DNA Sequencing
• Chapter 8: Access, Encapsulation, and Static Methods
  • Lesson 1: Access, Encapsulation, and Scope
  • Lesson 2: Access, Encapsulation, and Scope
  • Lesson 3: Static Methods of the Math Class
  • Lesson 4: Static Variables and Methods
  • Lesson 5: Static Variables and Methods
• Chapter 9: Inheritance and Polymorphism
  • Lesson 1: Inheritance and Polymorphism
  • Lesson 2: Inheritance and Polymorphism Quiz
  • Lesson 3: Language Families
• Chapter 10: Debugging
  • Lesson 1: Debugging
  • Lesson 2: Debugging
  • Lesson 3: Bug Detective
• Chapter 11: Two-Dimensional Arrays
  • Lesson 1: 2D Arrays: Java
  • Lesson 2: Quiz: 2D Arrays in Java
  • Lesson 3: 2D Arrays: Image Manipulation Project