Page 375 - Cs_withBlue_J_C11_Flipbook
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The output of the preceding program is as follows:
                 Enter lines of a poem
                 The divine breeze
                 Enter lines of a poem
                 The blooming trees
                 Enter lines of a poem
                 The divine sound of humming bees
                 Enter lines of a poem
                 I am lost in nature
                 Enter lines of a poem
                 Divine bliss.
                 Divine occurs 3 times



                              Let’s Revisit

                      ♦ Scanner class is used to read input from keyboard for different primitive data types.
                      ♦ PrintStream class converts output data of primitive type to text and writes it to the output stream.
                      ♦ StringTokenizer is a class which is used to split a String into tokens.
                      ♦ A file is a named location that can be used to store related information permanently in a secondary storage device.
                      ♦ Byte stream classes are used for byte-oriented IO and character stream classes are used for character-oriented IO.
                      ♦ The close() method is used to close the stream objects.






                                                              MIND DRILL





                      Solved Questions



                 A.  Tick ( ) the correct option:

                    1.  Scanner class belongs to ………………… package in Java.
                       a.  java.io                                     b.  java.util
                       c.  java.net                                    d.  java.lang
                    2.  Which of the following methods is used to scan int type data in the Scanner class?
                       a.  nextInteger()                               b.  NextInt()
                       c.  nextInt()                                   d.  nextUTF
                    3.  Tokens are separated by characters called ………………… .
                       a.  Delimiters                                  b.  Carriage return
                       c.  Escape sequence characters                  d.  New line
                    4.  Which of the following characters is added by the println() method after printing?
                       a.  null                                        b.  ‘\0’
                       c.  ’\r’                                        d.  ‘\n’
                    5.  Which of the following is the return type of the countTokens() method in StringTokenizer class?
                       a.  boolean                                     b.  int
                       c.  String                                      d.  char


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                                                                                 Basic Input/Output and Data File Handling    373
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