String Class MCQ

Test your knowledge with important String Class MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more String Class MCQs at Bissoy

• The string class deals with string of only character type.
  ক

  True

  খ

  False
• If two arguments are passed to the indexOf() function then ___________________
  ক

  Second argument indicates the occurrence number of specified character from starting

  খ

  Second argument indicates the occurrence number of specified character from end

  গ

  Second argument indicates the index of the character in first argument

  ঘ

  Second argument indicates the index of the character from the last of the string
• Function replace() accepts _____________ arguments.
  ক

  1

  খ

  2

  গ

  3

  ঘ

  4
• String trim() function is used to _______________________
  ক

  Remove all the white spaces from the string

  খ

  Remove white space from start of string

  গ

  Remove white space at end of string

  ঘ

  Remove white space from both the ends of string
• String class provides function toUpper() to _____________________
  ক

  Convert first character to uppercase

  খ

  Convert last character to uppercase

  গ

  Convert the whole string characters to uppercase

  ঘ

  Convert uppercase to lower and lower to uppercases
• The compareTo() function is used to ________________
  ক

  Compare strings value to string object

  খ

  Compare string value to string value

  গ

  Compare string object to another string object

  ঘ

  Compare string object to another string value
• Function equals() is _______________ and equalIgnoreCase() is _________________
  ক

  Case Insensitive, case insensitive

  খ

  Case sensitive, Case insensitive

  গ

  Case sensitive, case sensitive

  ঘ

  Case insensitive, case sensitive
• The function lastIndexOf() is used to ___________________
  ক

  Get the index of last occurrence of specified character in argument

  খ

  Get the index of first occurrence of specified character in argument

  গ

  Get the index of last occurrence of first character in string

  ঘ

  Get the index of last occurrence of last character of string
• String class have a concat() function that is used to _____________________
  ক

  Replace old string by new string

  খ

  Add two strings

  গ

  Append one string at end of another string

  ঘ

  Remove a string from end of one string
• If two index are given as argument to substring function then ___________________
  ক

  String of length equal to sum of two arguments is returned

  খ

  String starting from first index and of length equal to send argument

  গ

  String starting from first index and of length equal to sum of two arguments

  ঘ

  String starting from first index and ending at second index position
• If only one parameter is passed to substring function then __________________
  ক

  It returns the character at the specified position

  খ

  It returns the string of length 1 from the specified index

  গ

  It returns the string from specified index till the end

  ঘ

  It returns the string from starting of string till the specified index
• Which is the function to get the character present at a particular index in the string?
  ক

  char charAt(index);

  খ

  char charIn(StringName);

  গ

  char charAt(StringName);

  ঘ

  char charIn(index);
• What does function length do in String class?
  ক

  Returns length of string including null character

  খ

  Returns length of string excluding null character

  গ

  Returns length of substring

  ঘ

  Returns size of string in bytes
• How to declare an object of class String?
  ক

  String object_Name = value;

  খ

  String object_name = new;

  গ

  String object_name= new value;

  ঘ

  String object_name= value new;
• Which is a true statement for object of String class?
  ক

  Object are immutable

  খ

  Object are mutable

  গ

  Object are created only once

  ঘ

  Object can’t be created
• Which of these method of String class can be used to test to strings for equality?
  ক

  isequal()

  খ

  isequals()

  গ

  equal()

  ঘ

  equals()
• Which of these keywords is used to refer to member of base class from a subclass?
  ক

  upper

  খ

  super

  গ

  this

  ঘ

  none of the mentioned
• Which of these method of String class is used to obtain character at specified index?
  ক

  char()

  খ

  Charat()

  গ

  charat()

  ঘ

  charAt()
• String in Java is a?
  ক

  class

  খ

  object

  গ

  variable

  ঘ

  character array
• Which method do we use to append more than one character at a time?
  ক

  append

  খ

  operator+=

  গ

  data

  ঘ

  both append & operator+=
• Which is used to return the number of characters in the string?
  ক

  length

  খ

  size

  গ

  both size & length

  ঘ

  name
• What is the header file for the string class?
  ক

  #include<ios>

  খ

  #include<str>

  গ

  #include<string>

  ঘ

  #include<stio>
• How many types of representation are in the string?
  ক

  1

  খ

  2

  গ

  3

  ঘ

  4