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CodeSignal

Revisiting Java Basics

via CodeSignal

Overview

This is an introductory course to refresh your Java knowledge. Develop proficiency in Java syntax, string operations, and looping structures, establishing a strong foundation for addressing basic programming issues.

Syllabus

  • Lesson 1: Introduction to Java Collections and Strings
    • Refining Packing List in Java
    • Validating and Fixing a Packing List
    • Expanding an ArrayList for Packing
    • Verifying Item Presence and Index in Packing List
    • Pack Your Virtual Suitcase in Java
    • Space Explorer Task
  • Lesson 2: Introduction to Java Loops
    • Change For Loop to While Loop for Fruit Salad
    • Troubleshoot Java Fruit Inventory Tracker
    • Looping Through Fruits in Java
    • Building a Fruit Salad String in Java
    • Counting Non-Vowel Characters in a String
  • Lesson 3: Conditional Statements and Loop Control in Java
    • Stop Loop at Cold Temperature
    • Debugging a Temperature Reading Program
    • Weather Display Program
    • Controlling Flow Based on Temperature Conditions
    • Conditional Looping with If, Break, and Continue
  • Lesson 4: Handling String Data in Java
    • Counting Lowercase Characters in a String
    • Fix the Bug in String Uppercase Conversion
    • Encrypting Strings by Shifting Characters
    • Simple Text Encryption Using Caesar Cipher in Java
    • Encrypting Text Using a Shift Cipher in Java
  • Lesson 5: Basic String Manipulation in Java
    • Combining Astronaut Data Using Java Streams
    • Debugging Employee Information Management System in Java
    • Tokenizing and Assessing Employee Eligibility
    • Processing Astronaut Data in Java
    • Processing Space Exploration Crew Members Data

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