Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a string in Java?
💡 Hint: Think about how we use strings in everyday coding.
Question 2
Easy
How do you find the length of a string?
💡 Hint: What method do we use for measuring size?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does String str = "Hello, World!" represent?
- An integer
- A string
- A boolean
💡 Hint: Remember the definition of a string.
Question 2
True or False: Strings in Java can be changed after they are created.
- True
- False
💡 Hint: Think about the properties of objects in Java.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a program that takes a string and outputs its length, the first character, and a reversed version of the string.
💡 Hint: How do you extract individual characters for the reversed string?
Question 2
Write a method that takes a string and a character as inputs and counts how many times the character appears in the string.
💡 Hint: Consider how you can access each character efficiently.
Challenge and get performance evaluation