Java String (Basic)

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Which method is used to find the length of a string?

toUpperCase
equals
length (correct)
compareTo

Which method is used to concatenate two strings?

toUpperCase
compareTo
equals
concat (correct)

Which method is used to convert a string to uppercase?

equals
toUpperCase (correct)
length
compareTo

Which method is used to find the character at a specific index in a string?

charAt (D) Signup and view all the answers

Which method is used to compare two strings and ignore the case?

compareToIgnoreCase (A) Signup and view all the answers

Which method is used to check if two strings are equal?

equals (C) Signup and view all the answers

Which method is used to get a substring of a string?

substring (A) Signup and view all the answers

Which class is used to create and manipulate strings in Java?

String (C) Signup and view all the answers

What is the term used to describe a sequence of characters written inside double-quotes in Java?

String (A) Signup and view all the answers

What is the term used to describe the special memory area where strings are stored in Java?

Pool (C) Signup and view all the answers

What happens when a new string is created in Java?

A new string is created and returned (D) Signup and view all the answers

What is the most common way of creating a Java string?

Using String Literal (D) Signup and view all the answers

What happens when a string with the exact same value as an existing string is created in Java?

A reference is created pointing to the existing string (A) Signup and view all the answers

How many methods of creating strings are there in Java?

2 (B) Signup and view all the answers

Which method is used to get the substring from the beginIndex till the end of the string?

substring(int beginIndex) (A) Signup and view all the answers

Which method is used to check if the string contains a particular substring or not?

contains(String) (B) Signup and view all the answers

Which method is used to replace all occurrences of string1 in the string with string2?

replace(String1, String2) (B) Signup and view all the answers

Which method is used to replace only the first occurrence of string1 with string2?

replaceFirst(String1, String2) (D) Signup and view all the answers

Which method is used to remove all occurrences of string1 with string2?

replaceAll() (B) Signup and view all the answers

Which method is used for finding the index of the first occurrence of the character/string?

indexOf(String) (A) Signup and view all the answers

Which method is used to remove all the extra spaces from the beginning and end of a string?

trim() (C) Signup and view all the answers

Which method is used to check whether a string is empty or not?

isEmpty (B) Signup and view all the answers

What does the 'hashCode()' method return?

The hashcode of the string (A) Signup and view all the answers

Which method is used to split a string based on a delimiter?

split (D) Signup and view all the answers

What does the 'toCharArray()' method do?

Converts a string to an array of characters (D) Signup and view all the answers

Which method is used to convert a string to itself?

toString (B) Signup and view all the answers

What does the 'lastIndexOf()' method return?

The last occurrence of a character (D) Signup and view all the answers

What does the 'split(String, int)' method do?

Splits a string based on a delimiter and limits the number of split strings (A) Signup and view all the answers

What does the 'join()' method do?

Joins strings together using a delimiter (A) Signup and view all the answers

What is the purpose of the 'split(String)' method?

To split a string based on a delimiter with no limitation on the number of split strings (D) Signup and view all the answers