Explore the topics covered in the Flow controls: Loops lesson and enhance your programming skills by completing the included programming exercises.

Practice exercises


Char alphabet

Create a Java program that uses a `for` loop and `char` variables to display uppercase letters of the alphabet.


Multiplication table

Write a program in Java that asks the user for a number x and shows the result of his multiplication table from 1 to 10.


Product of a number

Create a Java program that prompts the user for two integer numbers and displays their multiplication using consecutive additions instead of the * operator.


Prime number

Develop a Java program that prompts the user to enter an integer and determine whether it is a prime number or not.


Descending odd numbers

Write a Java program that displays odd numbers from x to y in descending order.


Return change

Create a Java program that simulates a supermarket cash register to return change for a purchase.


Product of prime factors

Create a Java program that asks the user for an integer (x) and displays the product of its prime factors. Prime factors are prime numbers that exactly divide a number without leaving a remainder.


Using the while statement

Java Exercise: Multiply a number by 10 using the while statement. Practice loops in Java.


Using the do-while statement

Java exercise with do-while: Multiply a number by 10 until entering a negative number. Practice loops in Java.


Repeated number

Java program that repeats a number as many times as specified. Customize the number of repetitions.


Convert integer to binary and hexadecimal

Create a Java program that asks the user for an integer (x) and displays it in hexadecimal and binary.


Hexadecimal table from 0 to 255

Create a Java program that displays hexadecimal numbers from 0 to 255 in a table with 16 rows, each containing 16 numbers.


Range of numbers

Java exercise: Request a range of numbers (x, y) and display the numbers on the screen. Practice loops in Java.


Multiples numbers

Java program that displays numbers from 1 to 500 that are multiples of both 3 and 5. Enhance your Java skills with this number challenge.


Access control

Create a Java program that requests the user to enter a username and a password. It should repeat until the login is successful or reaches a maximum number of attempts.


Infinite divisions

Create a Java program that enables the user to input two numbers and displays the division along with the remainder. It will indicate when division by 0 is attempted and will exit if the first entered number is 0.


Infinite number sum

Java program that adds entered numbers until 0 is input and displays a completion message.


Infinite multiplication tables

Practice your Java skills by creating a program that generates and displays multiplication tables for a specified range of numbers.


Repetitive structures

Create a Java program that displays a range of numbers in three different ways. Strengthen your programming knowledge.


Digits in a number

Create a Java program to count the digits in a positive integer while handling negative numbers. Enhance your programming skills in Java.

Java Course Lessons

Discover all the lessons included in the Java programming course. Complete all the exercises and learn to program by programming.

Social networks

Help us to share free knowledge and programming in the world.

Keep learning

C# Programming Course

Free programming course with practical exercises and solutions in C#. Start learning right now!

Exercises C# App

Take your Exercises C# lessons everywhere with our Android app. Download it now from Google Play