Java Beginer's Course - MECO Robotics

Getting Started

Welcome to the VS Code Java world. Here is a guideline to help you get started to write Java code in Visual Studio Code.

Folder Structure

The workspace contains two folders by default, where:

• src: the folder to maintain sources
• lib: the folder to maintain dependencies

Meanwhile, the compiled output files will be generated in the bin folder by default.

If you want to customize the folder structure, open .vscode/settings.json and update the related settings there.

Dependency Management

The JAVA PROJECTS view allows you to manage your dependencies. More details can be found here.

Course Instructions

Work in progress

Module 1 Exercises

• Change the System.out.println statement in App.java to print out "GO FOR MECO"
• Add more lines of code to print out: "What's 8 times 3?", "24!", "83", "24"

Module 2 Exercises

Input / Output

• Replace all the System.out.println lines in App.java with a series of lines of code that
  • Asks the user to enter any number
  • Assign the input to an integer variable, then print the number variable
  • Ask the user to enter another number
  • Assign the input to a floating point number variable, then print the number variable
  • Ask the user to enter a single character
  • Assign the input to a character variable, then print the character variable

• int i = scanner.nextInt(); - gets a number from the console and sets to an int variable 'i'
• float f = scanner.nextFloat(); - gets a number from the console and sets to a float variable 'f'
• String s = scanner.next(); - gets a string from the console and sets to a String variable 's'

• Run the program and put in 8 for every answer
• Run the program and put in 8324 for every answer
• Run the program and put in 8.324 for every answer
• Run the program and put in A for every answer

Variable sizes

• Write a program that:
  • Defines a short variable and assigns the largest possible value
  • Prints the variable
  • Adds 1 to the variable. Hint: x = x + 1;
  • Prints the value of the variable - What happened?

Module 3 Exercises

• Write a program that computes the position an infinite recharge ball travels:

  • Ask the user the x value
  • Enter the x value into this quadratic: y=-0.16x^2 + 3.6x + 1.2. This is a quadratic equation in standard form where:
    • a = -0.16
    • b = 3.6
    • c = 1.2
  • Print out the y value for the provided inputs.

• Find the total distance traveled by the ball.

  • Find the roots of the quadratic in the previous exercise using the quadratic formula.
  • The positive root represents the distance traveled. Print it out with a label.

Module 4 Exercises

• Write a program that allows the user to determine if a 4 digit number has the first 2 digits multiplied to equal the last two
  • Ask the user to enter a 4 digit number - be sure to produce an error if their answer isn't 4 digits.
  • Break the string up into 3 strings - the first digit, second digit, and last two digits
  • Convert each of the strings into integers
  • Check to see if the multiplication works
  • Print an answer

Module 5 Exercises

Module 6 Exercises

Module 7 Exercises

Module 8 Exercises

Module 9 Exercises

Console color constants class: https://stackoverflow.com/questions/5762491/how-to-print-color-in-console-using-system-out-println/45444716#45444716