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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What method do you use to check if a file exists?
💡 Hint: Think about how you would confirm presence.
Question 2
Easy
How would you create a new file named 'test.txt'?
💡 Hint: Consider the sequence of creating a file.
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 the exists() method do?
- Checks if a file can be read
- Checks if a file exists
- Checks file size
💡 Hint: Reflect on the importance of confirming a file's presence.
Question 2
True or False: The length() method returns the last modified date of the file.
- True
- False
💡 Hint: Consider what 'length' implies in context.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a Java program that checks if a specified file exists and deletes it. If it does not exist, print an appropriate message.
💡 Hint: Remember to handle potential IOException for the delete operation.
Question 2
Create a script that logs the sizes of multiple files in a directory and outputs them to a text file.
💡 Hint: Utilize FileWriter for output and ensure you close it after writing.
Challenge and get performance evaluation