Week One

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Goal - Hello World exercise

Kahoot (Get used to Kahoot, Logistics)
Hello World Program
Deep dive Hello World Program ()
In Class Exercise
Comments
Kahoot (Week 2 course content, Basics, Comments)
Variables
Common data types (if we have time, we will look at more data types in next class)
Assignment

Hello World Exercise.

Creating a new project in IntelliJ

Find IntelliJ IDEA CE (you may have an icon in your Desktop or Applications), Open it.

Create a New Project
In the next screen make sure SDK is populated.
Click on Next.
Give a project name.
Right click on src -> New -> Java Class.
Give a name -> WeekTwoHelloWorld.
Hello world code auto generates.
Inorder to run your progam, Right click on the class you created and click on Run

Hello world exercise

//Name of class is WeekTwoHelloWorld
// Notice there is a main method in WeekTwoHelloWorld class
public class WeekTwoHelloWorld {
   
    //main method
    //Notice the opening and closing ()
    //Notice opening and closing {}
    public static void main(String args[]) {
        System.out.println("Replace Content");
    }
}

Observations

Java is case sensitive. (ie WeekTwoHelloWorld is different from weektwoHelloWorld, weektwoHelloWorld would be considered a new class.)
Name of file and class should be the same.
In Java everything must be in a class.
In Java if you want to print something, you will normally use System.out.println(), and pass the contents to print within “”

In Class Exercise.

Create a program to print one of the following
- Java is an OOP (Object oriented programming).
- In Java everything must be in a class.
- Java is case sensitive.
- In Java comments will not be executed.

Whats wrong with the code below.

public class WeekTwoHelloWorld {
    public static void main(String args[]) {
        System.out.println("Replace Content");
}

Whats wrong with the code below.

public class WeekTwoHelloWorld {
    public static void main(String args[]) {
        System.out.println("Replace Content";
    }
}

Whats wrong with the code below.

public class WeekTwoHelloWorld {
    public static void main(string args[]) {
        System.out.println("Replace Content)";
    }
}

Comments

Refer w3schools

Kahoot

Variables

Refer w3schools

Assignments

Install Git on your system.
- Windows, You can also follow the video, Watch video upto 1min 30 sec.
- if you are using a mac git may already be installed. On your terminal type in git --version , If git is not installed you will be prompted to install git. If git is installed you may see something similar to below
```
git --version
git version 2.24.3 (Apple Git-128)
```
Create a github account.
Suggested reading. Getting started in FTC

FAQ