Java Programming Quiz

What is a unique feature of Java enum constants?

• They can extend other classes.

• They are public, static, and final.

• They can be overridden.

• They can create objects.

Which method from the java.io package allows for file operations?

• FileHandler

• File

• FileIO

• FileOperations

How can you check if a file is readable in Java?

• file.canBeRead();

• file.canRead();

• file.isRead();

• file.isReadable();

Which method retrieves all constants of a Java enum?

• getConstants()

• values()

• list()

• getAll()

What does the length() method of the File class return?

• The number of lines in the file.

• The size of the file in bytes.

• The number of characters in the file.

• The size of the file in kilobytes.

How do you obtain the absolute path of a file in Java?

• file.getAbsolute();

• file.getAbsolutePath();

• file.getFullPath();

• file.getPath();

Which method retrieves the name of the file?

• file.getFile();

• file.getFileTitle();

• file.getName();

• file.getFilename();

What does the createNewFile() method return if the file already exists?

• Null

• False

• True

• IOException

How do you delete a file in Java?

• file.deleteFile();

• file.erase();

• file.delete();

• file.remove();

Which method is used to close a writer stream after writing to a file?

• writer.complete();

• writer.close();

• writer.finish();

• writer.end();