1. What does public int start() return?

1. 1. returns start index of the previous match

   
   
   

   2. returns start index of the input string

   
   
   

   3. returns start index of the current match

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   public int start() returns index of the previous match in the input string.

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2. what does public String replaceAll(string replace) do?

1. 1. Replace first subsequence that matches pattern with a replacement string

   
   
   

   2. Replace all other than first subsequence of that matches pattern with a replacement string

   
   
   

   3. Replace every subsequence of the input sequence that matches pattern with a replacement string

   
   
   

   4. Replace all characters that matches pattern with a replacement string

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   replaceAll method replaces every subsequence of the sequence that matches pattern with a replacement string.

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3. What does public int end(int group) return?

1. 1. offset from first character of the subsequent group

   
   
   

   2. offset from first character matched

   
   
   

   3. offset from last character of the subsequent group

   
   
   

   4. offset from last character matched

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   public int end(int group) returns offset from the last character of the subsequent group.

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4. Which of the following matches end of the string using regular expression in java?

1. 1. \*

   
   
   

   2. \z

   
   
   

   3. \\

   
   
   

   4. \Z

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   \z is used to match end of the entire string in regular expression in java.

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5. Which of the following matches nonword character using regular expression in java?

1. 1. \s

   
   
   

   2. \S

   
   
   

   3. \W

   
   
   

   4. \w

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   \W matches nonword characters. [0-9], [A-Z] and _ (underscore) are word characters. All other than these characters are nonword characters.

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