Java is more than just a programming language; it is the backbone of enterprise systems and creative problem-solving. Whether you are navigating a pixelated dungeon or managing a high-tech university database, Java provides the tools to turn logic into reality. This curated learning path takes you on a fast-paced journey from basic conditional execution to advanced collection management, proving that mastering object-oriented programming can be as thrilling as a rescue mission.
Rescue Princess with Conditional Execution
Difficulty: Beginner | Time: 5 minutes
In this challenge we are going to help Mario to call his brother Luigi to attack both demons and save the princess at the same time. We need to complete the code by filling in the blank in the if statement so that wh…
Java is more than just a programming language; it is the backbone of enterprise systems and creative problem-solving. Whether you are navigating a pixelated dungeon or managing a high-tech university database, Java provides the tools to turn logic into reality. This curated learning path takes you on a fast-paced journey from basic conditional execution to advanced collection management, proving that mastering object-oriented programming can be as thrilling as a rescue mission.
Rescue Princess with Conditional Execution
Difficulty: Beginner | Time: 5 minutes
In this challenge we are going to help Mario to call his brother Luigi to attack both demons and save the princess at the same time. We need to complete the code by filling in the blank in the if statement so that when it is executed, both branches of the if-else statement are executed and the master can be rescued.
Practice on LabEx → | Tutorial →
Student Score Ranking System
Difficulty: Beginner | Time: 5 minutes
In this challenge, our objective is to create a ranking system for student scores at Stark Industries University. To achieve this, we must compute the routine scores for every student based on their respective student IDs and then arrange the students in ascending order by their total scores. We shall need to employ array backtracking to derive the routine scores and Java’s collection sorting for arranging the student list. Let us begin and tackle the challenge.
Practice on LabEx → | Tutorial →
Enter student information
Difficulty: Beginner | Time: 5 minutes
In this challenge, we will be working with a HashSet collection to store and display student information. The goal is to ensure that the stored elements are not duplicated. To achieve this, we will need to override the hashCode() and equals() methods in the Student class, and implement the addStudent() and showStudent() methods in the StudentService class.
Practice on LabEx → | Tutorial →
In just fifteen minutes, you’ve evolved from a logic explorer to a data architect. These hands-on labs at LabEx are designed to strip away the fluff and focus on the core skills that make a Java developer successful. The princess is saved, the rankings are set, and the database is clean—now it’s time to take these skills and build something of your own. Your Java journey is just beginning!