21. Which of these is a type of stream in Java?

1. 1. Short stream

   
   
   

   2. Long stream

   
   
   

   3. Integer stream

   
   
   

   4. Byte stream

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   Java defines only two types of streams – Byte stream and character stream.

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22. Which of these classes are used by Byte streams for input and output operation?

1. 1. Reader

   
   
   

   2. InputStream

   
   
   

   3. InputOutputStream

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   Byte stream uses InputStream and OutputStream classes for input and output operation.

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23. Which of these classes are used by character streams for input and output operations?

1. 1. InputOutputStream

   
   
   

   2. InputStream

   
   
   

   3. Writer

   
   
   

   4. ReadStream

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Character streams uses Writer and Reader classes for input & output operations.

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24. Which of these class is used to read from byte array?

1. 1. ArrayInputStream

   
   
   

   2. InputStream

   
   
   

   3. ByteArrayInputStream

   
   
   

   4. BufferedInputStream

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   ByteArrayInputStream

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25. What is the output of this program if input given is ‘prstquvwxyz’?
    

    import java.util.*;
    import java.io.*;
        public  class Main
        {
            public static void main(String args[]) throws IOException
            {	 
                char c;
                BufferedReader obj = new BufferedReader(new InputStreamReader(System.in));
                do
                {
                    c = (char) obj.read();
    	        System.out.print(c);
                } while(c != 'q');
            }
        }
    

1. 1. prstquvwxyz

   
   
   

   2. prstquv

   
   
   

   3. prstq

   
   
   

   4. quvwxyz

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   prstq

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