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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 class is used to write to a file in Java?
💡 Hint: It's part of the Java I/O classes.
Question 2
Easy
True or False: You must close the PrintWriter after writing to a file.
💡 Hint: Think about data integrity.
Practice 3 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 is the purpose of the PrintWriter class?
- To read from files
- To write to files
- To delete files
💡 Hint: Think about what you do when you want to keep a note.
Question 2
True or False: FileWriter can be used to read from a file.
- True
- False
💡 Hint: Consider what the name implies.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Write a Java program that creates a file, writes ten random numbers to it, and handles any IOException that may occur.
💡 Hint: Remember to handle exceptions properly.
Question 2
Modify the previous program to append a new set of ten random numbers to the same file without overwriting it.
💡 Hint: Think about how appending is different from writing.
Challenge and get performance evaluation