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Java Basics
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Course Content

Java Basics

Java Basics

1. Getting Started
Backend DevelopmentRole of Java in the Backend Java Advantages Memory Types In Java Java's SyntaxYour First ProgramComments
2. Basic Types, Operations
Primitive Data TypesChallenge: Primitive TypesMathematical Operations on charMathematical Operations in JavaIf-Else StatementSwitch-Case StatementChallenge: Weekday Switch
3. Loops
Introduction to LoopsWhile-LoopDo-While LoopChallenge: Building a Server Retry MechanismFor-Loop Increment and DecrementInfinite LoopChallenge: Filtering Numbers in a Loop
4. Arrays
What is Array?Using Loops with ArraysIndex Out Of BoundsTwo-Dimentional ArrayIteration In Two-Dimensional ArrayFor-Each Loop
5. String
What Is String? Basic Methods In StringPractical Applications of String MethodsChallenge: Filter Failure MessagesNullPointerException StringBuilderString Pool, Method Equals() Summary

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Challenge: Filtering Numbers in a Loop

Task
test

Swipe to begin your solution

Find the sum of all numbers from 1 to n, excluding those that are divisible by 3 or 5.

  1. Write a for loop that runs from 1 to n.
  2. Inside the loop, check if the current number is divisible by 3 or 5.
  3. If the number is not divisible by 3 or 5, add it to the sum variable.

Solution

java

solution

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Section 3. Chapter 8
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book
Challenge: Filtering Numbers in a Loop

Task
test

Swipe to begin your solution

Find the sum of all numbers from 1 to n, excluding those that are divisible by 3 or 5.

  1. Write a for loop that runs from 1 to n.
  2. Inside the loop, check if the current number is divisible by 3 or 5.
  3. If the number is not divisible by 3 or 5, add it to the sum variable.

Solution

java

solution

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 8
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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