Practice File Class (21.1.2) - Java I/O and NIO

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9 questions

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6 sample questions

Question 1.
What method do you use to check if a file exists?
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Think about what checks for a file's presence.
Question 2.
How do you create a new File object for 'myfile.txt'?
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Remember how we declare an object in Java.
3Question 3.
What does the method exists() in the File class do?
- Checks the file size
- Checks if the file is readable
- Checks if the file exists
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Focus on the purpose of the method.
4Question 4.
True or False: The File class can only represent files, not directories.
- True
- False
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Consider what else you can represent with the File class.
Question 5.
Write a Java program that prompts the user for a file name, checks if it exists, and either displays the full path or an error message.
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Use methods from the File class to accomplish this task.
Question 6.
Explain how the File class can be used to check file permissions apart from checking existence.
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Think about the various interactions you might need with files.

5 more questions in this section. Enroll free to practise them all.