Java - IO - Interview Questions and Answers on FileWriter

Q1.  Which is the abstract parent class of FileWriter ?

Ans. OutputStreamWriter

Q2.  Which of the following code is correct ?

a. 

FileWriter fileWriter = new FileWriter("../file.txt");

File file = new File(fileWriter );

BufferedWriter bufferedOutputWriter = new BufferedWriter(fileWriter);

b. 

BufferedWriter bufferedOutputWriter = new BufferedWriter("../file.txt");

File file = new File(bufferedOutputWriter );

FileWriter fileWriter = new FileWriter(file);

c. 

File file = new File("../file.txt");

FileWriter fileWriter = new FileWriter(file);

BufferedWriter bufferedOutputWriter = new BufferedWriter(fileWriter);

d.

File file = new File("../file.txt");

BufferedWriter bufferedOutputWriter = new BufferedWriter(file); 

FileWriter fileWriter = new FileWriter(bufferedOutputWriter );

Ans. c. 

File file = new File("../file.txt");

FileWriter fileWriter = new FileWriter(file);

BufferedWriter bufferedOutputWriter = new BufferedWriter(fileWriter);

Q3.  Which exception should be handled in the following code ?

File file = new File("../file.txt");

FileWriter fileWriter = new FileWriter(file);

Ans. IOException

Q4.  Which exceptions should be handled with the following code ?

FileOutputStream fileOutputStream = new FileOutputStream(new File("newFile.txt"));

Ans. FileNotFoundException

Q5. Which is the Parent Class of FileWriter?

Ans. OutputStreamWriter