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 does the Scanner class do?
💡 Hint: Think about how we read user input in Java.
Question 2
Easy
Name one method of the Scanner class.
💡 Hint: Consider how you check for the next line of data.
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 class is typically used to read files in Java?
- FileWriter
- Scanner
- FileReader
💡 Hint: Think of the class that reads line by line.
Question 2
True or False: You must close a Scanner after use.
- True
- False
💡 Hint: What do we always emphasize after usage?
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Write a program using Scanner that reads a file called 'data.txt' and counts the number of lines in the file, also handling the possible exception if the file doesn't exist.
💡 Hint: Consider how you would typically read each line in a loop.
Question 2
Discuss how your program would behave if you forgot to use the try-catch block while opening a file within the Scanner class.
💡 Hint: Think of it like planning for bumps on the road; how would you manage unexpected issues?
Challenge and get performance evaluation