I just need help on number 7a, 7b, and 8, Thank you! What does each of the follo

Question

I just need help on number 7a, 7b, and 8, Thank you!

What does each of the following do? a. import java.io File; b. import java io.PrintWriter; c. File myFile = new File("data.txt"); creates a File object using a constructor that includes argument, d. if (myFile.exists()){.exists checks to see if myFile exists or not by e. System out print("Replace file data.txt? (y or n): char reply = keyboard.next().toLowerCase().char Asks user to replace data.txt by typing y or n, typing in the character. f. if (reply ! = 'y') if the reply is not 'y' g. System.exit(0);} Program turns off What does each of the following do? a. PrintWriter myWriter = new PrintWriter(myFile); b. my Writer print (courseName + ""); c. my Writer.println(numberOfStudents); d. my Writer, close(); What does each of the following do? a. Scanner myScanner = new Scanner(myFile); Create a Scanner for the file b. while (myScanner.has MNext()) Read data from a file

Explanation / Answer

Question 7a.

Answer: Importing File class into the current class

Question 7b

Answer: Importing the PrintWriter class into curren class

Question 8

Answer:

in line 1, we are creating printwriter object by passing file object as an arguement.

in line2, we are writing Coursename into file with no new line

in line 3, we are writing number of students into file with new lline

in line4, we are closing the file stream. means printWriter object.

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