Exam Objectives Covered

• Compile and execute a Java program


• Create a new class including a main method


• Bonus
  • Learn how to set up your environment by installing the JDK (Java Development Kit) and Notepad++ on your machine

---

Installing Java

• Begin by creating an Oracle account
  • https://profile.oracle.com/myprofile/account/create-account.jspx
  • Oracle is the current owner of the official implementation of the Java SE platform
  
  
• Download the Java SE Development Kit 8u261 installer
  • https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html
  • This is not the latest version of Java, but it is the most popular
  
  
• Execute the installer
  • Accept all the default settings
  • Click "Next" until installation is complete

---

Setting the "Path" Environment Variable

• Navigate to your system environment variables
  • Control Panel > System and Security > System > Advanced system settings > Environment Variables
  • You may also search for "Environment Variables" in the Windows search bar and select the "Edit the system environment variables" option

• Under the "System Variables" table, select the "Path" variable and click "Edit"

• Click "New" and enter the path to the bin folder of your JDK installation
  • The default path to the JDK bin folder is: C:\Program Files\Java\jdk1.8.0_261\bin


• Press "Enter" and click "Ok"

---

Lab 1.1 - Confirming Java is Installed

• Open Command Prompt
• On Windows 10, do this by typing "cmd" in the Windows Search Bar and pressing "Enter"


• In the Command Prompt, type "java -version"
• This should display information pertaining to the version of Java installed on your computer

---

Installing Notepad++

• Notepad++ is a free text editor
• Later on you will learn about other programs that can better help you write code
• However, we believe that it is important to learn how to do things yourself when you are starting out.


• Download the Notepad++ installer
• https://notepad-plus-plus.org/downloads/


• Execute the installer
• Accept all the default settings

Note: Notepad++ is not available for mac, however, any text editor will work as a replacement.

---

Lab 1.2 - Hello World

• Open Notepad++


• Type the following text into your editor
• The case and spelling is very important!

public class HelloWorld {
	
   public static void main(String[] args) {
      System.out.println("Hello world!");
   }

}

• Under the "File" tab, select "Save As..."


• Save this file on your desktop as "HelloWorld.java"
• This must be the name of the file!


• Open Command Prompt


• Confirm that you have correctly installed Java by entering the command "java -version"
• This command should display information based on the version of Java installed on your machine


• Change directories to the Desktop by entering the command "cd Desktop"


• Compile the program by entering the command "javac HelloWorld.java"
• Notice that a new file is created


• Execute the program by entering the command "java HelloWorld"
• See what happens!