Java Exercises
Practice Java with hands-on exercises designed to reinforce key concepts across all modules and difficulty levels. From beginner fundamentals to advanced topics, each exercise helps you apply what you’ve learned through real coding scenarios.
Use the filters to quickly find exercises by module and level, focus on specific areas, and progress at your own pace. Each exercise includes clear objectives, input/output examples, and starter code(when applicable) to guide your implementation.
Build your skills, gain confidence, and move from theory to practice with structured, real-world Java exercises.
Compute Factorial
Compute the factorial of a number n.
5Output:
120
Check Palindrome Number
Determine whether a number is a palindrome.
121Output:
TRUE
Reverse an Array Output
Print the elements of an array in reverse order.
[1,2,3]Output:
[3,2,1]
Count Even Numbers
Count how many even numbers exist in an array.
[1,2,3,4,6]Output:
3
Find Maximum Value in Array
Given an integer array return the maximum value.
[3,7,2,9,5]Output:
9
Sum of Array Elements
Write a program that computes the sum of all elements in an integer array.
[1,2,3,4]Output:
10